Dr. Jasbinder S. Sanghera Profile

Dr. Jasbinder S. Sanghera

Head of Optical Materials and Devices at US Naval Research Lab

SPIE Involvement:

Conference Chair | Conference Program Committee | Author | Editor

Publications (188)

SPIE Journal Paper | 29 October 2024 Open Access

Influence of co-dopants on the reduction of radiation-induced gain degradation in erbium-doped fiber

Colin C. Baker, Tony Zhou, Fred Kung, Woohong Kim, Daniel Rhonehouse, Jasbinder Sanghera

OE, Vol. 63, Issue 10, 106109, (October 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.10.106109

KEYWORDS: Cerium, Germanium, Erbium, Codoping, Ions, Electrons, Absorption, Optical engineering, Optical amplifiers, Laser radiation

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Proceedings Article | 10 June 2024 Presentation

Reduction of radiation induced gain degradation in Erbium doped fiber

Colin Baker, Woohong Kim, Tony Zhou, Fred Kung, Daniel Rhonehouse, Jasbinder Sanghera

Proceedings Volume PC13029, PC1302908 (2024) https://doi.org/10.1117/12.3017629

KEYWORDS: Erbium, Satellite communications, Photobleaching, Oscillators, Optical amplifiers, Glasses, Gamma radiation, Fiber amplifiers, Dopants

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Proceedings Article | 10 June 2024 Presentation

Multiband optics for visible-MWIR imaging

Daniel Gibson, Robert Nicol, Adam Floyd, Shyam Bayya, Vinh Nguyen, Daniel Rhonehouse, Jasbinder Sanghera, Jonathan Koerber, Gregory Forcherio

Proceedings Volume PC13042, PC1304208 (2024) https://doi.org/10.1117/12.3015919

KEYWORDS: Optical design, Lenses, Visible radiation, Optical properties, Mid-IR, Lens design, Imaging systems, Defense and security, Chromatic aberrations

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Proceedings Article | 10 June 2024 Presentation

Crystal fibers for active applications

Daniel Gibson, Robert Nicol, Woohong Kim, Shyam Bayya, Frederic Kung, Daniel Rhonehouse, Jason Myers, Leslie Shaw, Jasbinder Sanghera

Proceedings Volume PC13029, PC1302906 (2024) https://doi.org/10.1117/12.3015914

KEYWORDS: Laser crystals, Crystals, Fiber lasers, Laser applications, Laser systems engineering, High power lasers, Glasses, Fabrication

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Proceedings Article | 7 June 2024 Presentation + Paper

Sulfur-rich infrared transmitting polymer fibers

Darryl Boyd, Vinh Nguyen, Daniel Rhonehouse, Geoffrey Chin, Frederic Kung, Kenneth Ewing, Daniel Gibson, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 13042, 130420C (2024) https://doi.org/10.1117/12.3015280

KEYWORDS: Polymers, Infrared radiation, Optical fibers, Sulfur, Polymer optics, Waveguides, Polymer optical fibers, Optical transmission, Glasses

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Proceedings Article | 13 March 2024 Presentation + Paper

Demonstration of wideband tunability in chalcogenide metamaterials

J. Frantz, J. Myers, A. Clabeau, R. Bekele, A. Moore, V. Nguyen, C. McGinnis, J. Sanghera

Proceedings Volume 12896, 1289604 (2024) https://doi.org/10.1117/12.3000248

KEYWORDS: Tunable metamaterials, Photonic metamaterials, Transducers, Modeling, Mid-IR, Glasses, Film thickness, Chalcogenides, Waveguides

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Proceedings Article | 12 March 2024 Paper

Novel single-clad Ho-doped fiber amplifier with high slope efficiency and low ion pairing

Robert Tench, Wiktor Walasik, Alexandre Amavigan, Jean-Marc Delavaux, Colin Baker, E. Joseph Friebele, Daniel Rhonehouse, Jasbinder Sanghera

Proceedings Volume 12865, 128650U (2024) https://doi.org/10.1117/12.3000378

KEYWORDS: Ions, Fiber amplifiers, Analytical research, Optical testing, Design, Absorption

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Proceedings Article | 12 March 2024 Paper

All-spliced 11.3 W four-wave mixing fiber source at 760 nm

Patrick Hemmer, Rafael Gattass, Daniel Rhonehouse, L. Brandon Shaw, Geoffrey Chin, Augustus Carlson, Shyam Bayya, Jasbinder Sanghera

Proceedings Volume 12865, 128650M (2024) https://doi.org/10.1117/12.3004758

KEYWORDS: Photonic crystal fibers, Visible radiation, Four wave mixing, Fiber lasers

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Proceedings Article | 12 March 2024 Presentation

Photomechanical fiber optics

Jason Myers, Daniel Rhonehouse, Austin Moore, Geoffrey Chin, Robel Bekele, Jesse Frantz, Christopher Bardeen, Kevin Lam, Brandon Lui, Ameneh Maghsoodi, Jas Sanghera

Proceedings Volume PC12893, PC1289301 (2024) https://doi.org/10.1117/12.2692505

KEYWORDS: Fiber optics, Fabrication, Structured optical fibers, Silica, Polymethylmethacrylate, Photomechanical interactions, Optical fibers, Modeling, Materials properties, Light sources and illumination

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Proceedings Article | 8 March 2024 Presentation + Paper

Strategies to reduce radiation induced gain degradation in erbium doped fiber

Colin Baker, Tony Zhou, Fred Kung, Woohong Kim, Daniel Rhonehouse, Jasbinder Sanghera

Proceedings Volume 12882, 1288208 (2024) https://doi.org/10.1117/12.3003757

KEYWORDS: Erbium, Cerium, Germanium, Codoping, Electrons, Optical amplifiers, Ions, Solids, Signal attenuation, Deep space optical communications

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Proceedings Article | 8 March 2024 Presentation + Paper

Dual fiber laser pumped tunable mid-infrared laser source with high speed modulation

Augustus Carlson, Rafael Gattass, L. Brandon Shaw, Patrick Hemmer, Jasbinder Sanghera, David Szymanski, Chester Haag, Sandra Brusiloff, Pliny Hawthorn

Proceedings Volume 12882, 1288206 (2024) https://doi.org/10.1117/12.3008315

KEYWORDS: Modulation, Difference frequency generation, Mid-IR, Fiber lasers, Tunable lasers, Tunable filters, Mid infrared

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Proceedings Article | 8 March 2024 Presentation + Paper

Photomechanical bimorph fibers

A. Moore, J. Myers, D. Rhonehouse, G. Chin, J. Frantz, J. Sanghera

Proceedings Volume 12882, 128820L (2024) https://doi.org/10.1117/12.3006500

KEYWORDS: Actuators, Porosity, Thermal modeling, Polymethylmethacrylate, Process modeling

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Proceedings Article | 8 March 2024 Presentation + Paper

Measuring transmission at the Christiansen wavelength for dynamic sand samples

Cobey McGinnis, Jesse Frantz, Jason Myers, Anthony Clabeau, Austin Moore, Kenneth Ewing, Matthew Hart, Abbie Watnik, Jasbinder Sanghera

Proceedings Volume 12882, 1288203 (2024) https://doi.org/10.1117/12.3001651

KEYWORDS: Sand, FT-IR spectroscopy, Particles, Optical transmission, Light scattering

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Proceedings Article | 28 September 2023 Presentation

Advanced optics for EO/IR applications

Jonathan Koerber, Thomas Suleski, Daniel Gibson, Jasbinder Sanghera, Shyam Bayya, Brandon Swartz, Jason Valentine, Gregory Forcherio

Proceedings Volume 12665, 126650C (2023) https://doi.org/10.1117/12.2677684

KEYWORDS: Flat optics, Optical design, Optical components, Infrared radiation, Gradient-index optics, Freeform optics, Design and modelling, Short wave infrared radiation, Sensing systems, Roads

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SPIE Journal Paper | 5 September 2023

In-situ investigation of erbium doped fiber in a radiation rich environment

Colin C. Baker, E. Joseph Friebele, Woohong Kim, Shyam Bayya, Fred Kung, Tony Zhou, Daniel Rhonehouse, Jasbinder Sanghera

OE, Vol. 62, Issue 09, 096101, (September 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.9.096101

KEYWORDS: Erbium, Optical amplifiers, Germanium, Signal attenuation, Quantum processes, Codoping, Cerium, Laser radiation, Lanthanum, Electrons

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Proceedings Article | 15 June 2023 Presentation

Crystal fibers for active applications

Daniel Gibson, Robert Nicol, Rick Kim, Shyam Bayya, Jasbinder Sanghera, Brandon Shaw, Daniel Rhonehouse, Jason Myers, Adam Floyd, Tony Zhou, Bryan Sadowski, Fred Kung, Joshua Gild

Proceedings Volume PC12515, PC1251509 (2023) https://doi.org/10.1117/12.2668369

KEYWORDS: Crystals, Laser systems engineering, Laser damage threshold, Interfaces, High power lasers, Glasses, Fabrication, Cladding

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Proceedings Article | 14 June 2023 Presentation

Multiband optics and materials

Daniel Gibson, Adam Floyd, Joshua Gild, Shyam Bayya, Vinh Nguyen, Daniel Rhonehouse, Jasbinder Sanghera, Jonathan Koerber, Gregory Forcherio

Proceedings Volume 12530, 125300G (2023) https://doi.org/10.1117/12.2668366

KEYWORDS: Glasses, Long wavelength infrared, Lens design, Zinc sulfide, Short wave infrared radiation, Optical properties, Optical design, Mid-IR, Defense and security, Ceramics

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Proceedings Article | 14 June 2023 Presentation + Paper

Reduction in NIR absorption of spinel through annealing

Jeremy Murray-Krezan, Luke A. Lyle, Matthew Wells, William Everson, Joseph Randi, David Rearick, John Gannon, Mark Parish, Woohong Kim, Shyam Bayya, Tony Zhou, Jasbinder Sanghera

Proceedings Volume 12530, 125300E (2023) https://doi.org/10.1117/12.2664192

KEYWORDS: Iron, Annealing, Spinel, Oxygen, Magnesium, Aluminum, Absorption, Near infrared, Light absorption, Transition metals

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Proceedings Article | 14 June 2023 Presentation

Fabrication of rugged transparent ceramics

Joshua Gild, Adam Floyd, Bryan Sadowski, Tony Zhou, Woohong Kim, Shyam Bayya, Jasbinder Sanghera

Proceedings Volume PC12518, PC1251802 (2023) https://doi.org/10.1117/12.2663856

KEYWORDS: Ceramics, Oxides, Transparency, Surface plasmons, Plasma, Chemical analysis

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Proceedings Article | 14 March 2023 Presentation

Crystal fiber laser materials (Conference Presentation)

Daniel Gibson, Robert Nicol, Rick Kim, Shyam Bayya, Jasbinder Sanghera, Brandon Shaw, Daniel Rhonehouse, Jason Myers, Adam Floyd, Tony Zhou, Kent Everett, Ben Gray, Hyunjun Kim

Proceedings Volume 12417, 124170A (2023) https://doi.org/10.1117/12.2657515

KEYWORDS: Laser crystals, Fiber lasers, Crystals, Laser systems engineering, Laser damage threshold, Interfaces, High power lasers, Glasses, Cladding

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Proceedings Article | 14 March 2023 Presentation + Paper

Method of determination of the optical constants of particulate samples

Jesse Frantz, James Selby, Matthew Hart, Abbie Watnik, Jasbinder Sanghera

Proceedings Volume 12417, 124170E (2023) https://doi.org/10.1117/12.2650559

KEYWORDS: Sand, Composites, Optical constants, Spectroscopic ellipsometry

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Proceedings Article | 9 March 2023 Presentation

Crystal fibers for laser sources

Daniel Gibson, Brandon Shaw, Shyam Bayya, Jas Sanghera, Robert Nicol, Tony Zhou, Adam Floyd, Jason Myers, Robel Bekele

Proceedings Volume PC12399, PC1239902 (2023) https://doi.org/10.1117/12.2657526

KEYWORDS: Optical fibers, Laser sources, Laser crystals, Crystals, Laser systems engineering, Laser damage threshold, High power lasers, Glasses, Cladding

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Proceedings Article | 30 May 2022 Presentation + Paper

Chemical vapor detection using a passive infrared bioinspired sensor

Kevin Major, Robert Nicol, Jasbinder Sanghera, L. Brandon Shaw, Alan Samuels, Charles Davidson, Avishai Ben-David, Kenneth Ewing

Proceedings Volume 12116, 121160S (2022) https://doi.org/10.1117/12.2620557

KEYWORDS: Sensors, Infrared sensors, Bioalcohols, Black bodies, Infrared radiation, Industrial chemicals, Optical filters, Infrared detectors, Signal detection, Temperature metrology

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Proceedings Article | 30 May 2022 Presentation + Paper

Watt-level 2150 nm fiber laser

Rafael Gattass, Augustus Carlson, Colin Baker, Daniel Rhonehouse, E. Joseph Friebele, L. Brandon Shaw, Jasbinder Sanghera

Proceedings Volume 12092, 1209209 (2022) https://doi.org/10.1117/12.2633143

KEYWORDS: Fiber lasers, Laser systems engineering, Holmium, Thulium, Fiber Bragg gratings, Semiconductor lasers, Reflectivity, Diodes, Laser development, Laser damage threshold

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Proceedings Article | 30 May 2022 Presentation

Multispectral optics

Shyam Bayya, Daniel Gibson, Adam Floyd, Vinh Nguyen, Jas Sanghera, Jay Vizgaitis, David Zelmon

Proceedings Volume PC12091, PC1209103 (2022) https://doi.org/10.1117/12.2621612

KEYWORDS: Lens design, Glasses, Long wavelength infrared, Short wave infrared radiation, Optical components, Mid-IR, Defense and security, Ceramics

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Proceedings Article | 30 May 2022 Presentation

All-crystal fibers for high-power fiber lasers

Daniel Gibson, Robert Nicol, Rick Kim, Shyam Bayya, Jas Sanghera, Daniel Rhonehouse, Jason Myers, Adam Floyd, Tony Zhou, Kent Averett, Benjamin Gray, Hyunjun Kim, David Turner, Randall Hay

Proceedings Volume PC12092, PC120920D (2022) https://doi.org/10.1117/12.2619386

KEYWORDS: Optical fibers, High power fiber lasers, Laser systems engineering, Laser damage threshold, Interfaces, High power lasers, Glasses, Cladding

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Proceedings Article | 30 May 2022 Presentation

Ceramic rare earth-doped sesquioxides for infrared laser sources

Zackery Fleischman, Ei Brown, Mark Dubinskii, Shyam Bayya, Woohong Kim, Jas Sanghera, Tony Zhou

Proceedings Volume PC12092, PC1209201 (2022) https://doi.org/10.1117/12.2622503

KEYWORDS: Ceramics, Infrared lasers, Mid-IR, Laser applications, Laser crystals, Ions, Crystals, Temperature metrology, Spectroscopy, Phonons

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Proceedings Article | 27 May 2022 Presentation + Paper

Broadband transmission enhancement of B270 via random antireflective structured surfaces

Thomas Hutchens, Christopher Wilson, Ishwar Aggarwal, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 12103, 121030B (2022) https://doi.org/10.1117/12.2623469

KEYWORDS: Scanning electron microscopy, Reflectivity, Reflection, Etching, Antireflective coatings, Silica, Plasma etching, Visible radiation, Soda-lime glass, Optical coatings

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Proceedings Article | 6 August 2021 Poster + Paper

Tunable mid-wavelength infrared (MWIR) polarizer by ORMOCHALC composite with improved thermomechanical stability

Md Didarul Islam, Sipan Liu, John Derov, Augustine Urbas, Zahyun Ku, Darryl Boyd, Woohong Kim, Jasbinder Sanghera, Vinh Nguyen, Jason Myers, Colin Baker, Evan Smith, Jong Eun Ryu

Proceedings Volume 11797, 1179722 (2021) https://doi.org/10.1117/12.2594342

KEYWORDS: Polarizers, Refractive index, Composites, Polymers, Mid-IR, Nanoparticles, Nanocomposites, Optical components

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Mid-wavelength infrared (MWIR, λ = 3 – 5 μm) materials are of great importance due to their applications in optical sensors and devices for military, industry, and non-invasive medical diagnostics. Specifically, MWIR polarimetry are used in biometric recognition and camouflaged detection. Recently, sulfur based organically modified chalcogenides (ORMOCHALC) polymers have been utilized to fabricate MWIR polarizers with competitive extinction coefficient to commercial polarizers, which are mostly made of expensive, brittle, and heavy inorganic materials. On the other hand, to adjust or reinforce the refractive index of the polymer, the chalcogenide content (i.e., sulfur, selenium) needs to be increased, which may result in adverse effects on the thermomechanical characteristics, including Young's modulus and lower glass transition temperature. This reduced thermomechanical stability compromises the structural integrity of ORMOCHALC-based optical devices. In this study, an ORMOCHALC polymer, poly(S–r–DIB), was reinforced with the zinc sulfide (ZnS) nanoparticles to simultaneously improve the refractive index and the thermomechanical properties. The addition of 20 wt% ZnS nanoparticles improves the pure polymer's glass transition temperature (T_g) from 9.6 °C to 31.4 °C, and the refractive index by Δn= 6.58 %. Then, subwavelength wire-grid polarizers were fabricated based on the pure ORMOCHALC first by a simple thermal imprinting method followed by metal deposition. The resulted MWIR polarizer showed a high extinction coefficient which is comparable with commercial polarizers. However, the structural integrity of the polarizers was compromised due to lower glass transition temperature. Finally, finite element analysis was conducted on the possible wire-grid polarizer fabrication utilizing optically and mechanically reinforced composites, as demonstrated in this study. If fabricated, these nanoparticles reinforced polarizers will possess superior structural integrity compared to ORMOCHALC polarizers. Moreover, these polarizers show a spectral selectivity as the transmission curve's resonance wavelength depends on the composite's refractive index, which is tunable by controlling the nanoparticles content. The resonance peak redshifted from 3.12 μm to 3.3 μm for the pure polymer to 20% ZnS reinforced ORMOCHALC polarizer. The extinction coefficient of the polarizer also improved in multiple wavelength bands in the MWIR. These polarizers with superior extinction coefficient, spectral selectivity, and improved thermomechanical stability demonstrate a broader prospect in MWIR optics.

Proceedings Article | 3 August 2021 Poster + Paper

The polymer nanocomposites embedded particles size and agglomeration effect on the effective refractive index tuning

Sipan Liu, Md Didarul Islam, Zahyun Ku, Augustine Urbas, Darryl Boyd, Woohong Kim, Jasbinder Sanghera, Jong Ryu

Proceedings Volume 11802, 118020L (2021) https://doi.org/10.1117/12.2594382

KEYWORDS: Particles, Nanoparticles, Nanocomposites, Polymers, Scattering, Refractive index, Finite element methods, Light scattering

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Proceedings Article | 16 April 2021 Presentation

Materials for multiband lenses, VIS-MWIR and SWIR-LWIR

Daniel Gibson, Shyam Bayya, Woohong (Rick) Kim, Vinh Nguyen, Michael Hunt, Adam Floyd, Guillermo Villalobos, Jas Sanghera, Jay Vizgaitis, David Zelmon

Proceedings Volume 11737, 1173703 (2021) https://doi.org/10.1117/12.2588270

KEYWORDS: Lenses, Glasses, Long wavelength infrared, Lens design, Zinc, Short wave infrared radiation, Optical components, Mid-IR, Defense and security, Ceramics

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Proceedings Article | 15 April 2021 Presentation + Paper

Detection of chemical threats on surfaces using a human color vision inspired sensing method

Kevin Major, Jasbinder Sanghera, L. Shaw, Chris Howle, Ken McEwan, Kenneth Ewing

Proceedings Volume 11749, 117490L (2021) https://doi.org/10.1117/12.2589553

KEYWORDS: Color vision, Sensors, Infrared sensors, Biological and chemical sensing, Optical filters, Nerve agents, Infrared radiation, Infrared detectors, Environmental sensing, Chemical fiber sensors

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Proceedings Article | 12 April 2021 Presentation

Rugged oxide ceramics for optics

Woohong Kim, Shyam Bayya, Guillermo Villalobos, Daniel Gibson, Colin Baker, Michael Hunt, Lynda Busse, Bryan Sadowski, David Zelmon, Jasbinder Sanghera

Proceedings Volume 11737, 1173706 (2021) https://doi.org/10.1117/12.2586829

KEYWORDS: Ceramics, Oxides, Optical properties, Visible radiation, Ultraviolet radiation, Spinel, Short wave infrared radiation, Mid-IR, Lens design, Birefringence

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Proceedings Article | 5 March 2021 Presentation

Compact eye-safe pulsed hybrid (fiber-bulk) MOPA based on Er-doped gain media

Jun Zhang, Radha Pattnaik, Viktor Fromzel, Nikolay Ter-Gabrielyan, Colin Baker, E. Joseph Friebele, Jasbinder Sanghera, Mark Dubinskii

Proceedings Volume 11682, 116820O (2021) https://doi.org/10.1117/12.2588457

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Proceedings Article | 5 March 2021 Presentation + Paper

Identification of cancerous lesions from healthy skin using an infrared, optical filter based approach

Kevin Major, Jas Sanghera, Kenneth Ewing

Proceedings Volume 11618, 116180Y (2021) https://doi.org/10.1117/12.2578820

KEYWORDS: Skin cancer, Skin, Optical filters, Infrared radiation, Cancer, Tissue optics, Visible radiation, Spectroscopy, Point-of-care devices, Melanoma

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Skin cancer, in all its various forms has been identified by the American Cancer Society as the most common form of cancer in both the United States and worldwide. In fact, more Americans will be diagnosed with skin cancer than all other forms of cancer combined. Typically, initial skin cancer diagnosis relies on the asymmetry, border, core, diameter, and evolution (ABCDE) test. As a subjective test, the ABCDE method relies on the skill of the practitioner to provide an accurate diagnosis. Therefore, a diagnostic instrument that could be used as an initial screening tool to determine whether a skin lesion is potentially cancerous would have significant application. This need is especially acute in under-served communities without ready-access to skilled practitioners. It also could have widespread applicability at the point-of-care to reduce the strain on clinical dermatologists. We have recently demonstrated preliminary results showing the capability to discriminate between healthy skin and cancerous lesions using an infrared method inspired by human color vision. This technique relies on identifying variations in the infrared (IR) spectra of healthy and cancerous tissue; however, unlike standard IR-spectroscopic sensing methods it does not require the use of a spectrometer. Rather, this approach utilizes the response through three IR optical filters; similar to the method that human eye uses to discriminate between hundreds of thousands of colors in the natural world. Here, we report on calculated studies demonstrating the selectivity of this approach for various types of cancerous lesions including melanomas. We explore various potential optical filter sets to discriminate not only between healthy and cancerous tissue, but also to determine whether it may be possible to discriminate between various types of melanoma lesions using this bioinspired method. These results demonstrate that this approach has potential as a low-cost, widely deployed sensing method for detection of cancerous skin lesions, prior to examination by a trained specialist.

SPIE Journal Paper | 26 November 2020 Open Access

Special Section Guest Editorial: Advances in Gradient Index Optics Technology

Peter Marasco, Clara Rivero-Baleine, Guy Beadie, Duncan Moore, Kathleen Richardson, Michael Ponting, Jasbinder Sanghera

OE, Vol. 59, Issue 11, 112601, (November 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.11.112601

KEYWORDS: GRIN lenses, Gradient-index optics, Optics manufacturing, Chemical elements, Optical engineering, Glasses, Analytical research, Visible radiation, Telecommunications, Refractive index

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SPIE Journal Paper | 17 June 2020 Open Access

Diffusion-based gradient index optics for infrared imaging

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jason Myers, Erin Fleet, Jas Sanghera, Jay Vizgaitis, John Deegan, Guy Beadie

OE, Vol. 59, Issue 11, 112604, (June 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.11.112604

KEYWORDS: Glasses, GRIN lenses, Lens design, Infrared imaging, Diffusion, Modulation transfer functions, Long wavelength infrared, Gradient-index optics, Chemical elements, Optical components

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Proceedings Article | 20 May 2020 Presentation + Paper

Anti-reflective structured surfaces on soda-lime windows for high power laser applications

Christopher Wilson, Thomas Hutchens, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas S. Sanghera, Ishwar Aggarwal

Proceedings Volume 11403, 114030H (2020) https://doi.org/10.1117/12.2570179

KEYWORDS: Silica, High power lasers, Reflectivity, Visible radiation, Reflection, Etching, Antireflective coatings, Reactive ion etching, Gradient-index optics, Soda-lime glass

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Proceedings Article | 19 May 2020 Presentation + Paper

Design and operation of a human color vision inspired sensor for proximate standoff detection

Kevin Major, Jasbinder Sanghera, L. Brandon Shaw, Kenneth Ewing

Proceedings Volume 11416, 114160B (2020) https://doi.org/10.1117/12.2558802

KEYWORDS: FT-IR spectroscopy, Aluminum, Optical filters, Bandpass filters, Sensors, Standoff detection, Mirrors, Absorption, Biomimetics, Color vision

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Proceedings Article | 27 April 2020 Presentation

Rugged spinel for imaging applications (Conference Presentation)

Shyam Bayya, Woohong Kim, Guillermo Villalobos, Michael Hunt, Jas Sanghera, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 11403, 114030C (2020) https://doi.org/10.1117/12.2560864

KEYWORDS: Spinel, Sapphire, Visible radiation, Infrared sensors, Infrared imaging, Magnesium, Ultraviolet radiation, Mid-IR, Crystals, Ceramics

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Proceedings Article | 27 April 2020 Presentation

New NRL glasses for multispectral imagers in visible to LWIR (Conference Presentation)

Daniel Gibson, Michael Hunt, Shyam Bayya, Vinh Nguyen, Daniel Rhonehouse, Jas Sanghera, Jay Vizgaitis

Proceedings Volume 11403, 114030A (2020) https://doi.org/10.1117/12.2560853

KEYWORDS: Glasses, Multispectral imaging, Imaging systems, Long wavelength infrared, Optical design, Databases, Refractive index, Glass molding, Thermography, Interfaces

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Proceedings Article | 2 March 2020 Presentation + Paper

Erbium doped fibers for radiation tolerant, high power space laser communications

E. Joseph Friebele, Colin Baker, Jasbinder Sanghera, Michael LuValle, Stephanos Logothetis

Proceedings Volume 11272, 1127212 (2020) https://doi.org/10.1117/12.2551493

KEYWORDS: Optical amplifiers, Optical fibers, Statistical modeling, Nanoparticles, Ionizing radiation effects, Laser communications, Erbium lasers, Accelerated life testing

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Proceedings Article | 2 March 2020 Paper

Thermally tuned resonances in chalcogenide glass dielectric metasurfaces

Jesse Frantz, Robel Bekele, Anthony Clabeau, Jason Myers, Vinh Nguyen, Natalia Litchinitser, Jasbinder Sanghera

Proceedings Volume 11287, 1128701 (2020) https://doi.org/10.1117/12.2548466

KEYWORDS: Annealing, Selenium, Refractive index, Dielectrics, Fabry–Perot interferometers, Reflectors, Mid-IR, Chalcogenide glass, Glasses, Statistical modeling

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Proceedings Article | 20 February 2020 Presentation + Paper

A biomimetic optical approach to skin cancer detection

Kenneth Ewing, Kevin Major, Jasbinder Sanghera

Proceedings Volume 11233, 1123309 (2020) https://doi.org/10.1117/12.2554642

KEYWORDS: Skin, Melanoma, Biomimetics, Skin cancer, Sensors, Optical filters, Tissue optics, Infrared spectroscopy, Spectroscopy, FT-IR spectroscopy

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Proceedings Article | 9 September 2019 Presentation

Glasses for multiband IR and GRIN optics (Conference Presentation)

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jasbinder Sanghera

Proceedings Volume 11105, 111050F (2019) https://doi.org/10.1117/12.2530724

KEYWORDS: Glasses, Infrared imaging, Gradient-index optics, GRIN lenses, Optical properties, Databases, Zemax, Lens design, Infrared sensors, Sensors

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Proceedings Article | 20 May 2019 Paper

Spinel optics for high energy lasers

Syed N. Qadri, Shyam Bayya, Guillermo Villalobos, Woohong Kim, Michael Hunt, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Bryan Sadowski, Robert Miklos, Ishwar Aggarwal, Christopher Wilson

Proceedings Volume 10985, 1098508 (2019) https://doi.org/10.1117/12.2520612

KEYWORDS: Spinel, Absorption, Ceramics, Laser damage threshold, Microwave radiation, Industrial chemicals

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Proceedings Article | 17 May 2019 Paper

Experimental considerations for the proximate standoff detection of highly scattering hazardous materials using infrared techniques

Kevin Major, Jasbinder Sanghera, Mikella Farrell, Ellen Holthoff, Paul Pellegrino, Thomas Hutchens, Ishwar Aggarwal, Kenneth Ewing

Proceedings Volume 11010, 1101006 (2019) https://doi.org/10.1117/12.2518231

KEYWORDS: Optical filters, Standoff detection, Explosives, Sensors, Biomimetics, FT-IR spectroscopy, Scattering, Infrared spectroscopy, Diffuse reflectance spectroscopy, Biosensing

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Proceedings Article | 17 May 2019 Paper

Examination of stochastic and ordered methods to select optical filters for discrimination between chemical vibrational absorption bands

Kevin Major, Jasbinder Sanghera, Thomas Hutchens, Menelaos Poutous, Ishwar Aggarwal, Kenneth Ewing

Proceedings Volume 11010, 1101017 (2019) https://doi.org/10.1117/12.2518238

KEYWORDS: Optical filters, Algorithms, Stochastic processes, Absorption, Infrared spectroscopy, Biomimetics, Chemical analysis, Biological and chemical sensing, Color vision, Infrared sensors

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Proceedings Article | 17 May 2019 Presentation + Paper

Laser damage testing of windows with anti-reflection structured surfaces for high power continuous-wave near-infrared laser applications

Christopher Wilson, Thomas Hutchens, Jesse Frantz, Lynda Busse, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 10985, 109850D (2019) https://doi.org/10.1117/12.2519194

KEYWORDS: Laser induced damage, Continuous wave operation, Silica, High power lasers, Reflection, Reflectivity, Thermography, Laser damage threshold, Antireflective coatings, Thin films

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Proceedings Article | 17 May 2019 Paper

Infrared reflectance characterization of ammonium nitrate residue on roughened aluminum for potential bioinspired stand-off sensor

Thomas Hutchens, Christopher Wilson, Matthew Potter, Menelaos Poutous, Kevin Major, Kenneth Ewing, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 11010, 1101018 (2019) https://doi.org/10.1117/12.2519110

KEYWORDS: Aluminum, Sensors, Absorption, Mid-IR, Long wavelength infrared, Spectroscopy, Reflectivity, Explosives

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Proceedings Article | 14 May 2019 Presentation + Paper

Fabrication of high refractive index, infrared transmitting Organically Modified Chalcogenide (ORMOCHALC) polymers (Rising Researcher Presentation)

Darryl Boyd, Vinh Nguyen, Collin McClain, Colin Baker, Jason Myers, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 10998, 1099802 (2019) https://doi.org/10.1117/12.2518119

KEYWORDS: Polymers, Refractive index, Sulfur, Selenium, Infrared radiation, Chalcogenides, Mid-IR, Long wavelength infrared, Optical properties, Electromagnetism

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Proceedings Article | 14 May 2019 Presentation + Paper

Multispectral IR optics and GRIN

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jas Sanghera, Guy Beadie, Mikhail Kotov, Collin McClain, Jay Vizgaitis

Proceedings Volume 10998, 109980D (2019) https://doi.org/10.1117/12.2518656

KEYWORDS: Chalcogenide glass, GRIN lenses, Glasses, Diffusion, Refractive index, Imaging systems, Long wavelength infrared, Lens design, Infrared imaging

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Proceedings Article | 13 May 2019 Paper

Improved polymer cladding for eye safer fiber lasers

Darryl Boyd, L. Brandon Shaw, Colin Baker, Dan Rhonehouse, Michael Hunt, E. Joseph Friebele, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 10981, 109810H (2019) https://doi.org/10.1117/12.2522718

KEYWORDS: Polymers, Cladding, Fiber lasers, Nanoparticles, Refractive index, Ceramics, Eye, Polymer optical fibers, Coating

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Proceedings Article | 27 February 2019 Paper

Arsenic selenide dielectric metasurfaces

Jesse Frantz, Jason Myers, Robel Bekele, Anthony Clabeau, Vinh Nguyen, Collin McClain, Natalia Litchinitser, Jasbinder Sanghera

Proceedings Volume 10914, 109140A (2019) https://doi.org/10.1117/12.2507894

KEYWORDS: Selenium, Arsenic, Transmittance, Dielectrics, Silicon, Long wavelength infrared, Mid-IR, Glasses, Infrared radiation, Chalcogenide glass

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SPIE Journal Paper | 8 November 2018

Laser damage of silica optical windows with random antireflective structured surfaces

Christopher R. Wilson, Thomas C. Hutchens, Gopal Sapkota, Jason R. Case, Matthew G. Potter, Lynda E. Busse, Jesse A. Frantz, L. Brandon Shaw, Jas S. Sanghera, Menelaos K. Poutous, Ishwar D. Aggarwal

OE, Vol. 57, Issue 12, 121906, (November 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.12.121906

KEYWORDS: Antireflective coatings, Laser induced damage, Silica, Windows, Scanning electron microscopy, Resistance, Reflectivity, Microscopes, Thin films, Interfaces

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High intensity nanosecond laser pulses induce damage on uncoated optics and antireflection (AR) coated optics with thin film boundaries. Structured surfaces with AR performance have shown higher damage resistance than conventional AR coatings. This work explores laser-induced damage threshold (LIDT) of random antireflective surface structures (rARSS), covering interfaces of planar fused silica substrates, using a 7 ± 1 nanosecond duration, single damaging pulse at 1064-nm wavelength. The rARSS treated windows were optimized for AR at 1064 nm, and transmittance of each treated interface was increased by 3.2% per ISO 13697. Incident fluence was controlled near LIDT for both entry and exit sides. Multiple locations were tested for each fluence setting in accordance with ISO 21254 1-on-1 LIDT testing. Double-sided and single-sided rARSS, orientation with both entrance-side and exit-side treatments, were tested to determine effects random structures have in damage induced by field enhancement on the exit side. Results show that rARSS on a single side of an optic have higher resistance to onset of laser damage when located at entry (structured) side. All tests resulting in damage of polished and single-sided rARSS oriented on exit side were ballistic on beam exit facet, showing surface cracks. Results from rARSS located on beam entry side (both single- and double-side treated) showed nonballistic damage and densification of rARSS features from localized melting or reflow, capping the rARSS but still preserving effective-gradient index and rARSS transmission enhancement. This suggests that the localized melting of the rARSS optic surface does not constitute damage optically, or at least not catastrophically within the prebulk damage regime. Therefore, it is possible to foresee the onset of true damage within an optical system via tracking transmission drop, and swap optics out before catastrophic system failure. The drop in transmission acts as an early warning system, making these rARSS optics an invaluable tool in high-energy laser development.

Proceedings Article | 17 September 2018 Presentation

All-dielectric, nonlinear, reconfigurable metasurface-enabled optical beam converter (Conference Presentation)

Yun Xu, Jingbo Sun, Jesse Frantz, Mikhail Shalaev, Jason Myers, Robel Bekele, Alexander Tsukernik, Wiktor Walasik, Jasbinder Sanghera, Natalia Litchinitser

Proceedings Volume 10719, 107191Y (2018) https://doi.org/10.1117/12.2322146

KEYWORDS: Nonlinear optics, Refractive index, Optical communications, Spiral phase plates, Optical components, Glasses, Chalcogenides, Numerical simulations, Switching, Integrated circuits

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Proceedings Article | 17 September 2018 Presentation

IR GRIN optics (Conference Presentation)

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, Collin McClain, Jay Vizgaitis

Proceedings Volume 10746, 107460A (2018) https://doi.org/10.1117/12.2321229

KEYWORDS: Gradient-index optics, Lenses, GRIN lenses, Near infrared, Infrared sensors, Sensors, Imaging systems

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Proceedings Article | 17 September 2018 Presentation

New moldable glasses for multispectral optics (Conference Presentation)

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, Collin McClain, Jay Vizgaitis

Proceedings Volume 10743, 1074309 (2018) https://doi.org/10.1117/12.2321177

KEYWORDS: Glasses, Infrared imaging, Imaging systems, Thermography, Optical design, Intelligence systems, Refractive index, Multispectral imaging, Glass molding, Interfaces

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Proceedings Article | 30 May 2018 Paper

Raman and CT scan mapping of chalcogenide glass diffusion generated gradient index profiles

G. Lindberg, J. Cruz, B. Unger, J. Deegan, R. Benson, D. Gibson, S. Bayya, J. Sanghera, V. Nguyen, M. Kotov

Proceedings Volume 10627, 106270C (2018) https://doi.org/10.1117/12.2305012

KEYWORDS: GRIN lenses, Refraction, Glasses, Chalcogenide glass, Diffusion, Chalcogenides, Gradient-index optics, Precision glass molding, Metrology, Spherical lenses

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Proceedings Article | 23 May 2018 Paper

Enabling standoff detection of hazardous materials using a fiber optic coupled quantum cascade infrared laser system

Kenneth Ewing, Kevin Major, Jasbinder Sanghera, Rafael Gattass, L. Brandon Shaw, Lynda Busse, David Arnone, Enrique Lopez, Michael Pushkarsky, Justin Kane, Rhea Clewes, Linda Lee, Chris Howle

Proceedings Volume 10629, 106290A (2018) https://doi.org/10.1117/12.2304352

KEYWORDS: Quantum cascade lasers, Standoff detection, Explosives, Infrared spectroscopy, Cameras, Optical fibers, Infrared radiation, Long wavelength infrared, Sensors

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Proceedings Article | 16 May 2018 Paper

High-confidence discrimination of explosive materials on surfaces using a non-spectroscopic optical biomimetic sensing method

Kevin Major, Kenneth Ewing, Jasbinder Sanghera, Thomas Hutchens, Menelaos Poutous, Matthew Potter, Christopher Wilson, Ishwar Aggarwal, Mikella Farrell, Ellen Holthoff, Paul Pellegrino

Proceedings Volume 10629, 106290P (2018) https://doi.org/10.1117/12.2304349

KEYWORDS: Biomimetics, Explosives, Optical filters, Mid-IR, Long wavelength infrared, Biosensing, Sensors, Optical sensing, Infrared sensors, FT-IR spectroscopy

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Proceedings Article | 14 May 2018 Presentation

NRL glasses for multispectral optics designs (Conference Presentation)

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, Collin McClain

Proceedings Volume 10627, 1062706 (2018) https://doi.org/10.1117/12.2305728

KEYWORDS: Glasses, Optical design, Infrared imaging, Imaging systems, Thermography, Intelligence systems, Refractive index, Multispectral imaging, Glass molding, Interfaces

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Proceedings Article | 14 May 2018 Presentation

Recent advances in holmium doped fibers for high-energy lasers (Conference Presentation)

Colin Baker, E. Joseph Friebele, Ashley Burdett, L. Brandon Shaw, Steven Bowman, Woohong Kim, Jasbinder Sanghera, John Ballato, Courtney Kucera, Amber Vargas, Alexander Hemming, Nikita Simikov, John Haub

Proceedings Volume 10637, 1063704 (2018) https://doi.org/10.1117/12.2310134

KEYWORDS: Holmium, Nanoparticles, Laser energy, Fiber lasers, Silica, Phonons, Laser applications, Laser safety, Directed energy weapons, Eye

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Proceedings Article | 14 May 2018 Presentation

Growth of crystalline claddings on single crystal fiber (Conference Presentation)

L. Brandon Shaw, Shyam Bayya, Woohong Kim, Jason Myers, Charles Askins, John Peele, Daniel Rhonehouse, Rajesh Thapa, Daniel Gibson, Jasbinder Sanghera

Proceedings Volume 10637, 106370M (2018) https://doi.org/10.1117/12.2310140

KEYWORDS: Crystals, Cladding, YAG lasers, Liquid crystals, Fiber lasers, Laser crystals, Silica, Absorption, Holmium, Optical fibers

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Proceedings Article | 14 May 2018 Presentation

GRIN optics for dual-band IR sensors (Conference Presentation)

Daniel Gibson, Shyam Bayya, Jas Sanghera, Vinh Nguyen, Mikhail Kotov, Collin McClain, Jay Vizgaitis

Proceedings Volume 10627, 106270D (2018) https://doi.org/10.1117/12.2305725

KEYWORDS: Infrared sensors, Gradient-index optics, Lenses, GRIN lenses, Near infrared, Sensors, Imaging systems

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Proceedings Article | 8 May 2018 Presentation + Paper

Long-duration CW laser testing of optical windows with random antireflective surface structures on both interfaces: preliminary results

Christopher Wilson, Thomas Hutchens, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 10627, 106270H (2018) https://doi.org/10.1117/12.2317882

KEYWORDS: Continuous wave operation, Antireflective coatings, Thin films, Laser induced damage, Silica, Interfaces, Laser damage threshold, Optical testing, Windows, Thin film coatings, High power fiber lasers

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Proceedings Article | 14 March 2018 Presentation

Power scaling of the in-band diode-pumped Er-nanoparticle-doped fiber laser (Conference Presentation)

Jun Zhang, Radha Pattnaik, Mark Dubinskii, Colin Baker, E. Joseph Friebele, Ashley Burdett, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 10528, 1052803 (2018) https://doi.org/10.1117/12.2296922

KEYWORDS: Fiber lasers, Erbium, Doping, Nanoparticles, Fabrication, Absorption, Upconversion

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Proceedings Article | 14 March 2018 Presentation

Laser damage testing of silica windows with hydrophobic antireflective surfaces (Conference Presentation)

Lynda Busse, Jesse Frantz, Darryl Boyd, Woohong (Rick) Kim, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 10513, 1051316 (2018) https://doi.org/10.1117/12.2292258

KEYWORDS: Silica, Antireflective coatings, Laser induced damage, Glasses, Laser energy, Optical simulations, Eye, Reflection, Laser damage threshold, Laser systems engineering

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Proceedings Article | 14 March 2018 Presentation

Yb-Er co-doping for resonantly pumped fiber lasers at eye-safer wavelengths (Conference Presentation)

Colin Baker, E. Joseph Friebele, Ashley Burdett, Daniel Rhonehouse, Woohong Kim, Jasbinder Sanghera, Jun Zhang, Radha Pattnaik, Mark Dubinskii

Proceedings Volume 10528, 1052807 (2018) https://doi.org/10.1117/12.2296604

KEYWORDS: Fiber lasers, Erbium, Eye, Ions, Doping, Nanoparticles, Ytterbium, Erbium lasers, Laser applications, Laser safety

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Proceedings Article | 22 February 2018 Paper

Refractive waveguide non-mechanical beam steering (NMBS) in the MWIR

Jason Myers, Jesse Frantz, Christopher Spillmann, Robel Bekele, Jakub Kolacz, Henry Gotjen, Jawad Naciri, Brandon Shaw, Jas Sanghera

Proceedings Volume 10539, 105390A (2018) https://doi.org/10.1117/12.2290379

KEYWORDS: Liquid crystals, Mid-IR, Waveguides, Beam steering, Chalcogenide glass, LIDAR

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Proceedings Article | 22 February 2018 Paper

Polarization sensitivity of ordered and random antireflective surface structures in silica and spinel

J. Frantz, J. Selby, L. Busse, L. Shaw, I. Aggarwal, J. Sanghera

Proceedings Volume 10528, 105281E (2018) https://doi.org/10.1117/12.2289898

KEYWORDS: Reflectivity, Spinel, Polarization, Transmittance, Diffraction, Silica, Thin film coatings, Antireflective coatings, Optical coatings, Reflection

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Proceedings Article | 13 November 2017 Paper

Laser damage of optical windows with random antireflective surface structures on both interfaces

Christopher Wilson, Matthew Potter, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jas Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10447, 1044706 (2017) https://doi.org/10.1117/12.2279614

KEYWORDS: Laser induced damage, Antireflective coatings, Thin films, Laser damage threshold, Silica, Interfaces, Scanning electron microscopy, Windows, Reflection, Reflectivity

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Proceedings Article | 5 October 2017 Presentation + Paper

Chalcogenide negative curvature fibers

Curtis Menyuk, Chengli Wei, R. Joseph Weiblen, Jonathan Hu, Rafael Gattass, L. Brandon Shaw, Jasbinder Sanghera

Proceedings Volume 10435, 104350I (2017) https://doi.org/10.1117/12.2279958

KEYWORDS: Optical fibers, Chalcogenides, Optical simulations, Silica, Carbon dioxide lasers, Photonic crystal fibers, Mid-IR

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Proceedings Article | 23 August 2017 Paper

Crystal fiber lasers

W. Kim, S. Bayya, L. B. Shaw, J. Myers, S. Qadri, R. Thapa, C. Askins, J. Peele, D. Rhonehouse, S. Bowman, D. Gibson, Joseph Kolis, Brad Stadleman, J. Sanghera

Proceedings Volume 10382, 103820Q (2017) https://doi.org/10.1117/12.2275332

KEYWORDS: Crystals, Laser crystals, Fiber lasers, Glasses, High power fiber lasers, Optical fibers, Laser scattering

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Proceedings Article | 7 June 2017 Presentation

Antireflective surface structures on infrared optics (Conference Presentation)

Lynda Busse, Jesse Frantz, L. Brandon Shaw, Shyam Bayya, Guillermo Villalobos, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 10181, 101810I (2017) https://doi.org/10.1117/12.2262893

KEYWORDS: Reflection, Infrared imaging, Infrared radiation, Optical coatings, Antireflective coatings, Reactive ion etching, Imaging systems, Defense and security, Refractive index, Pollution control

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Proceedings Article | 7 June 2017 Presentation

Expanded IR glass map with new NRL glasses for multispectral optics designs (Conference Presentation)

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, Collin McClain, Jay Vizgaitis

Proceedings Volume 10181, 1018102 (2017) https://doi.org/10.1117/12.2262889

KEYWORDS: Glasses, Optical design, Infrared imaging, Imaging systems, Thermography, Defense and security, Intelligence systems, Refractive index, Multispectral imaging, Glass molding

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Proceedings Article | 7 June 2017 Presentation

Recent developments in spinel at NRL (Conference Presentation)

Shyam Bayya, Guillermo Villalobos, Woohong Kim, Michael Hunt, Benjamin Rock, Jasbinder Sanghera, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 10179, 101790H (2017) https://doi.org/10.1117/12.2262904

KEYWORDS: Spinel, Magnesium, Ceramics, Ultraviolet radiation, Mid-IR, Glasses, Sapphire, Optical properties, Sensors, Analytical research

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Proceedings Article | 7 June 2017 Presentation

Broadband, ultralow reflectance surface structures on silica windows for high-energy laser applications (Conference Presentation)

Lynda Busse, Jesse Frantz, L. Brandon Shaw, Menelaos Poutous, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 10179, 1017905 (2017) https://doi.org/10.1117/12.2262873

KEYWORDS: Silica, Antireflective coatings, Reflectivity, Glasses, Laser applications, Laser induced damage, Laser energy, Optical coatings, Laser damage threshold, Resistance

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Proceedings Article | 1 June 2017 Presentation + Paper

IR GRIN optics: design and fabrication

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jas Sanghera, Mikhail Kotov, Collin McClain, John Deegan, George Lindberg, Blair Unger, Jay Vizgaitis

Proceedings Volume 10181, 101810B (2017) https://doi.org/10.1117/12.2262706

KEYWORDS: Diffusion, GRIN lenses, Glasses, Refractive index, Infrared imaging, Chalcogenide glass, Gradient-index optics, Optical design, Imaging systems, Infrared radiation

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Proceedings Article | 11 May 2017 Paper

Non-mechanical beam steering in the mid-wave infrared

Jesse Frantz, Jason Myers, Robel Bekele, Christopher Spillmann, Jawad Naciri, Jakub Kolacz, Henry Gotjen, Leslie Shaw, Jasbinder Sanghera, Bennett Sodergren, Ying-Ju Wang, Scott Rommel, Mike Anderson, Scott Davis, Michael Ziemkiewicz

Proceedings Volume 10181, 101810X (2017) https://doi.org/10.1117/12.2271898

KEYWORDS: Electrodes, Nanostructures, Mid-IR, Beam steering, Liquid crystals, Waveguides, Chalcogenide glass, LIDAR, Short wave infrared radiation, Near infrared, Chalcogenides

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Proceedings Article | 11 May 2017 Paper

Mid-infrared imaging fiber bundle

Francois Chenard, Oseas Alvarez, Dan Gibson, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 10181, 101810V (2017) https://doi.org/10.1117/12.2269076

KEYWORDS: Chalcogenide glass, Cladding, Mid-IR, Thermography, Chalcogenides, Infrared imaging, Infrared radiation, Coherence imaging, Infrared cameras, Cameras, Defense technologies, Glasses

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Proceedings Article | 3 May 2017 Paper

Superhydrophobic, infrared transmissive moth eye-like substrates for use in wet conditions

Darryl Boyd, Jesse Frantz, Lynda Busse, Woohong Kim, Shyam Bayya, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 10179, 1017906 (2017) https://doi.org/10.1117/12.2263078

KEYWORDS: Infrared imaging, Nanostructures, Reflectivity, Antireflective coatings, Calcium, Scanning electron microscopy, Molecules, Germanium, Silica

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Proceedings Article | 21 April 2017 Presentation

Clad-pumped Er-nanoparticle-doped fiber laser (Conference Presentation)

Colin Baker, E. Joseph Friebele, Daniel Rhonehouse, Barbara Marcheschi, John Peele, Woohong Kim, Jasbinder Sanghera, Jun Zhang, Youming Chen, Radha Pattnaik, Mark Dubinskii

Proceedings Volume 10083, 100831P (2017) https://doi.org/10.1117/12.2256594

KEYWORDS: Erbium, Fiber lasers, Nanoparticles, Cladding, Absorption, Ions, Directed energy weapons, Upconversion, Doping, Aluminum

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Proceedings Article | 19 April 2017 Presentation

IR-transmitting GRIN chalcogenide optics (Conference Presentation)

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, John Deegan, George Lindberg, Blair Unger

Proceedings Volume 10100, 1010013 (2017) https://doi.org/10.1117/12.2253335

KEYWORDS: Chemical elements, Analytical research, Infrared imaging, GRIN lenses, Chalcogenides, Gradient-index optics, Infrared technology, Infrared radiation, Optical components

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Proceedings Article | 19 April 2017 Presentation

New IR materials for multispectral optics (Conference Presentation)

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, John Deegan, George Lindberg, Blair Unger

Proceedings Volume 10100, 1010015 (2017) https://doi.org/10.1117/12.2253305

KEYWORDS: Refractive index, Glasses, Short wave infrared radiation, Long wavelength infrared, Optical design, Infrared materials, Infrared imaging, Imaging systems, Intelligence systems, Chalcogenide glass

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Proceedings Article | 19 April 2017 Presentation

Single-crystal fiber lasers for high-power applications (Conference Presentation)

Shyam Bayya, L. Brandon Shaw, Woohong Kim, Charles Askins, Jason Myers, Steve Bowman, Daniel Gibson, Noor Qadri, Jasbinder Sanghera, John Peele, Rajesh Thapa, Daniel Rhonehouse

Proceedings Volume 10100, 1010005 (2017) https://doi.org/10.1117/12.2252726

KEYWORDS: Laser development, Optical fibers, Laser scattering, Scattering, Crystals, Fiber lasers, Glasses, Laser crystals, YAG lasers, Doping

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Proceedings Article | 7 March 2017 Paper

Ho-nanoparticle-doping for improved high-energy laser fibers

E. Joseph Friebele, Colin Baker, Ashley Burdett, Daniel Rhonehouse, Steven Bowman, Woohong Kim, Jasbinder Sanghera, Courtney Kucera, Amber Vargas, John Ballato, Alexander Hemming, Nikita Simakov, John Haub

Proceedings Volume 10100, 1010003 (2017) https://doi.org/10.1117/12.2255775

KEYWORDS: Nanoparticles, Ions, Doping, Fiber lasers, Silica, Optical fibers, Holmium, Neptunium, Absorption, Lutetium

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Proceedings Article | 20 February 2017 Presentation + Paper

Control of spectral transmission enhancement properties of random anti-reflecting surface structures fabricated using gold masking

Abigail Eckart, Gopal Sapkota, Matthew Potter, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10115, 101150B (2017) https://doi.org/10.1117/12.2252382

KEYWORDS: Gold, Reactive ion etching, Annealing, Scattering, Silica, Plasma etching, Reflection, Plasma, Etching, Scanning electron microscopy

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Proceedings Article | 17 February 2017 Paper

Analyte detection in complex samples using a biomimetic, non-spectroscopic sensing method

Kevin Major, Menelaos Poutous, Ishwar Aggarwal, Jasbinder Sanghera, Kenneth Ewing

Proceedings Volume 10072, 100720Z (2017) https://doi.org/10.1117/12.2252890

KEYWORDS: Absorption, Statistical analysis, Optical sensing, Infrared radiation, Optical filters, Biological research, Biomimetics, Biosensing, Absorption spectroscopy, Molecules, Bioalcohols, Data modeling, FT-IR spectroscopy, Chemical analysis, Sensors

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Proceedings Article | 16 February 2017 Paper

Integrated optic waveguides in gallium lanthanum sulfide glass for mid-IR applications

J. Frantz, J. Myers, L. Shaw, J. Sanghera

Proceedings Volume 10100, 101000T (2017) https://doi.org/10.1117/12.2253035

KEYWORDS: Mid-IR, Integrated optics, Waveguides, Glasses, Chalcogenides, Crystals, Reactive ion etching, Rare earth doped glasses, Luminescence, Information operations, Sapphire

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Proceedings Article | 8 December 2016 Presentation

Multiband optics for imaging systems (Conference Presentation)

Jasbinder Sanghera, Daniel Gibson, Shyam Bayya, Vinh Nguyen, Mikhail Kotov, Collin McClain

Proceedings Volume 9988, 99880G (2016) https://doi.org/10.1117/12.2240857

KEYWORDS: Imaging systems, Intelligence systems, Glasses, Infrared imaging, Thermography, Optical design, Lens design, Aerospace engineering, Reconnaissance systems, Surveillance

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Proceedings Article | 6 December 2016 Paper

Entry and exit facet laser damage of optical windows with random antireflective surface structures

Gopal Sapkota, Jason Case, Matthew Potter, Lynda Busse, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 10014, 1001404 (2016) https://doi.org/10.1117/12.2244540

KEYWORDS: Microscopes, Laser induced damage, Silica, Antireflective coatings, Resistance, Q switching, Reflectivity, Scanning electron microscopy, Transmittance, Q switched lasers

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Nanosecond duration, high intensity and high average power laser pulses induce damage on uncoated optics, due to localized field enhancement at the exit surface of the components. Anti-reflection (AR) coated optics, due to their (multiple) thin film boundaries, have similar field enhancement regions, which lead to laser damage on both entry and exit sides. Nano-scale structured optical interfaces with AR performance (ARSS) have been widely demonstrated, and found to have higher laser damage resistance than conventional AR coatings. Comprehensive tests of optical entry and exit structured-surface laser damage using nanosecond pulses for ARSS are not widely available. We measured the laser damage of random anti-reflective surface structures (rARSS), on planar, optical quality, fused silica substrates, using single 6-8ns duration pulses at 1064 nm wavelength. The single-sided rARSS substrates were optimized for Fresnel reflectance suppression at 1064 nm, and the measured transmittance at normal incidence was increased by 3.2%, with a possible theoretical maximum of 3.5%. The high energy laser beam was focused to increase the incident intensity, in order to probe values above and below the damage thresholds reported in the literature. The source laser Q-switch durations were used to directly control incident fluence. Multiple locations were tested for each Q-switch setting, to build a statistical relationship between the fluence and damaging events. Single-sided, AR random surface structured substrates were tested, using entry and exit side orientations, to determine any effects the random structures may have in the damage induced by the field enhancement on the exit side. We found that the AR randomly structured surfaces have a higher resistance, to the onset of laser damage, when they are located at the entry (structured) side of the substrates. In comparison, when the same AR random structures are in the beam exit side of the substrates, the onset of laser damage occurs at lower fluence values. All tests resulting in damage of the optical-quality polished fused silica substrates, and those with the structures on the exit side of the samples, are ballistic in nature, showing surface cracks and outward-directed debris craters, all occurring at the beam exit facet. Of interest are the results from tests completed with the rARSS located on the beam entry side; the damage caused by these tests was not typically ballistic in nature (inward directed craters) and occurred on the structured side of the samples.

Proceedings Article | 15 September 2016 Presentation + Paper

Characterization of random anti-reflecting surface structures and their polarization response at off-normal angles of incidence

Gopal Sapkota, Jason Case, Lynda Busse, Jesse Frantz, L. Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Menelaos Poutous

Proceedings Volume 9927, 992712 (2016) https://doi.org/10.1117/12.2235380

KEYWORDS: Polarization, Silica, Etching, Surface finishing, Reflectivity, Gradient-index optics, Refractive index, Transmittance, Polishing, Reflection

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Proceedings Article | 7 September 2016 Paper

Cladded single crystal fibers for high power fiber lasers

W. Kim, B. Shaw, S. Bayya, C. Askins, J. Peele, D. Rhonehouse, J. Meyers, R. Thapa, D. Gibson, J. Sanghera

Proceedings Volume 9958, 99580O (2016) https://doi.org/10.1117/12.2239218

KEYWORDS: Optical fibers, Crystals, Glasses, Laser crystals, YAG lasers, High power fiber lasers, Fiber lasers, Cladding, Capillaries, Silica

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Proceedings Article | 12 July 2016 Paper

Applicability of ion mobility spectrometry for detection of quarantine pests in wood

K. Ewing, J. Sanghera, S. Myers, A. Ervin, C. Carey, G. Gleason, L. Mosser, L. Levy, M. Hennessey, R. Bulluck

Proceedings Volume 9864, 98640P (2016) https://doi.org/10.1117/12.2223877

KEYWORDS: Inspection, Spectroscopy, Target detection, Optical inspection, Agriculture, Solids, Ions, Bromine, Neodymium, Chemical analysis

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Proceedings Article | 17 May 2016 Paper

Raman and CT scan mapping of chalcogenide glass diffusion generated gradient index profiles

G. Lindberg, R. Berg, J. Deegan, R. Benson, P. Salvaggio, N. Gross, B. Weinstein, D. Gibson, S. Bayya, J. Sanghera, V. Nguyen, M. Kotov

Proceedings Volume 9822, 98220W (2016) https://doi.org/10.1117/12.2223775

KEYWORDS: Raman spectroscopy, Chalcogenide glass, Computed tomography, GRIN lenses, Diffusion, Gradient-index optics, Refractive index, Finite element methods, UV optics, Defense and security

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Proceedings Article | 17 May 2016 Paper

IR-GRIN optics for imaging

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jas Sanghera, Mikhail Kotov, Robert Miklos, Collin McClain

Proceedings Volume 9822, 98220R (2016) https://doi.org/10.1117/12.2224094

KEYWORDS: Gradient-index optics, Infrared radiation, Chalcogenides, Infrared imaging, GRIN lenses, Glasses, Diffusion, Neodymium, Ions, Imaging systems

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Proceedings Article | 17 May 2016 Paper

Rugged spinel optics for space based imaging systems

Shyam Bayya, Guillermo Villalobos, Michael Hunt, Woohong Kim, Simon Plunkett, Jasbinder Sanghera

Proceedings Volume 9822, 982204 (2016) https://doi.org/10.1117/12.2224144

KEYWORDS: Spinel, Glasses, Particles, Astronomical imaging, Imaging systems, Ultraviolet radiation, Mid-IR, Sapphire, Ceramics, Space operations

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Proceedings Article | 17 May 2016 Paper

Expanded IR glass map for multispectral optics designs

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Guy Beadie, Jasbinder Sanghera, Mikhail Kotov

Proceedings Volume 9822, 98220N (2016) https://doi.org/10.1117/12.2224130

KEYWORDS: Glasses, Long wavelength infrared, Imaging systems, Optical design, Optical components, Thermography, Multispectral imaging, Mid-IR, Short wave infrared radiation, Infrared imaging

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Proceedings Article | 3 May 2016 Paper

Evaluation of a biomimetic optical-filter based chemical sensor for detection of hazardous chemical vapors in the infrared

Kevin Major, Menelaos Poutous, Kevin Dunnill, Kenneth Ewing, Jasbinder Sanghera, P. Deguzman, Ishwar Aggarwal

Proceedings Volume 9823, 98230U (2016) https://doi.org/10.1117/12.2224145

KEYWORDS: Optical filters, Biomimetics, Mid-IR, Target detection, Infrared radiation, Absorption, Chemical fiber sensors, Sensors, Signal detection, Chemical analysis

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Proceedings Article | 16 March 2016 Paper

Nanoparticle doping for improved Er-doped fiber lasers

Colin Baker, E. Joseph Friebele, Charles Askins, Michael Hunt, Barbara Marcheschi, Jake Fontana, John Peele, Woohong Kim, Jasbinder Sanghera, Jun Zhang, Radha Pattnaik, Larry Merkle, Mark Dubinskii, Youming Chen, Iyad Dajani, Cody Mart

Proceedings Volume 9728, 97280T (2016) https://doi.org/10.1117/12.2217905

KEYWORDS: Erbium, Doping, Fiber lasers, Aluminum, Nanoparticles, Ions, Absorption, Silica, Luminescence, Refractive index

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Proceedings Article | 16 March 2016 Paper

Random anti-reflection structures on large optics for high energy laser applications

J. Frantz, L. Busse, K. Major, G. Sapkota, M. Poutous, I. Aggarwal, J. Sanghera

Proceedings Volume 9726, 97261T (2016) https://doi.org/10.1117/12.2211149

KEYWORDS: Windows, Thin film coatings, Laser applications, Antireflective coatings, Laser optics, Nanostructuring, Thin films, Laser damage threshold, Optical coatings, Transmittance, Reactive ion etching, Reflectivity, Etching, Quartz, Photography

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Proceedings Article | 5 October 2015 Presentation

A novel method for mapping open-circuit voltage in solar cells with nanoscale resolution (Presentation Recording)

Elizabeth Tennyson, Joseph Garrett, Jesse Frantz, Jason Myers, Robel Bekele, Jasbinder Sanghera, Jeremy Munday, Marina Leite

Proceedings Volume 9561, 95610C (2015) https://doi.org/10.1117/12.2187581

KEYWORDS: Solar cells, Near field scanning optical microscopy, Microscopy, Optical resolution, Image resolution, Metrology, External quantum efficiency, Thin films, Thin film solar cells, Compound semiconductors

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Proceedings Article | 16 June 2015 Paper

Design and fabrication of multispectral optics using expanded glass map

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Jasbinder Sanghera, Mikhail Kotov, Gryphon Drake, John Deegan, George Lindberg

Proceedings Volume 9451, 94511N (2015) https://doi.org/10.1117/12.2177289

KEYWORDS: Glasses, Long wavelength infrared, Imaging systems, Optical design, Mid-IR, Multispectral imaging, Short wave infrared radiation, Optical components, Aspheric lenses, Infrared imaging

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Proceedings Article | 15 June 2015 Paper

GRIN optics for multispectral infrared imaging

Daniel Gibson, Shyam Bayya, Vinh Nguyen, Jas Sanghera, Mikhail Kotov, Gryphon Drake

Proceedings Volume 9451, 94511P (2015) https://doi.org/10.1117/12.2177136

KEYWORDS: Glasses, GRIN lenses, Infrared imaging, Diffusion, Refractive index, Gradient-index optics, Thermography, Infrared radiation, Imaging systems, Short wave infrared radiation

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Proceedings Article | 15 June 2015 Paper

Temperature assisted band-gap engineering in all-solid chalcogenide holey fiber for mid-IR application

Ajanta Barh, R. Varshney, B. Pal, J. Sanghera, L. Shaw

Proceedings Volume 9654, 96541P (2015) https://doi.org/10.1117/12.2182330

KEYWORDS: Mid-IR, Glasses, Micro optical fluidics, Chalcogenides, Optical filters, Structured optical fibers, Thermal optics, Photonic crystals, Cladding, Sensors

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Proceedings Article | 3 June 2015 Paper

Filter selection criteria for the discrimination of strongly overlapping chemical spectra

Kevin Major, Menelaos Poutous, Kevin Dunnill, Kenneth Ewing, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 9482, 948213 (2015) https://doi.org/10.1117/12.2176623

KEYWORDS: Optical filters, Biological and chemical sensing, Chemical analysis, Absorption, Sensors, Infrared radiation, Signal detection, Absorption filters, Infrared signatures, Sensing systems

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Proceedings Article | 26 May 2015 Paper

Index change of chalcogenide materials from precision glass molding processes

J. Deegan, K. Walsh, G. Lindberg, R. Benson, D. Gibson, S. Bayya, J. Sanghera, E. Stover

Proceedings Volume 9451, 94511R (2015) https://doi.org/10.1117/12.2176608

KEYWORDS: Glasses, Refractive index, Precision glass molding, Chalcogenides, Optical design, Modulation transfer functions, Glass molding, Refraction, Sensors, Infrared radiation

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Proceedings Article | 26 May 2015 Paper

Methods of both destructive and non-destructive metrology of GRIN optical elements

G. Lindberg, J. Deegan, R. Benson, A. Berger, J. Linden, D. Gibson, S. Bayya, J. Sanghera, V. Nguyen, M. Kotov

Proceedings Volume 9451, 94511S (2015) https://doi.org/10.1117/12.2176615

KEYWORDS: GRIN lenses, Glasses, Raman spectroscopy, Metrology, Nondestructive evaluation, Gradient-index optics, Optical components, Refractive index, Chalcogenide glass, Raman scattering

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Proceedings Article | 22 May 2015 Paper

Low-loss spinel windows for high-energy lasers

Woohong Kim, Colin Baker, Guillermo Villalobos, Shyam Bayya, Michael Hunt, Bryan Sadowski, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 9453, 945303 (2015) https://doi.org/10.1117/12.2176378

KEYWORDS: Spinel, Ceramics, Absorption, Laser scattering, Scattering, Magnesium, Sapphire, Chemical elements, Laser energy, Aluminum

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Proceedings Article | 22 May 2015 Paper

Highly transparent spinel windows by microwave sintering

Jasbinder Sanghera, Ben Rock, Guillermo Villalobos, Woohong Kim, Michael Hunt, Bryan Sadowski, Shyam Bayya, Ishwar Aggarwal, M. Ashraf Imam

Proceedings Volume 9453, 945302 (2015) https://doi.org/10.1117/12.2180287

KEYWORDS: Spinel, Microwave radiation, Ceramics, Mid-IR, Sapphire, Crystals, Electromagnetism, Electrons, X-ray diffraction, Particles

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Proceedings Article | 16 March 2015 Paper

Optical performance of random anti-reflection structures on curved surfaces

C. Taylor, K. Major, Rajendra Joshi, L. Busse, J. Frantz, J. Sanghera, I. Aggarwal, M. Poutous

Proceedings Volume 9359, 935916 (2015) https://doi.org/10.1117/12.2076791

KEYWORDS: Lenses, Silica, Transmittance, Interfaces, Spherical lenses, Reflectivity, Reflection, Etching, Thin film coatings, Anisotropic etching

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Proceedings Article | 4 March 2015 Paper

Erbium nanoparticle doped fibers for efficient, resonantly-pumped Er-doped fiber lasers

E. Joseph Friebele, Colin Baker, Charles Askins, Jake Fontana, Michael Hunt, John Peele, Barbara Marcheschi, Euneku Oh, Woohong Kim, Jasbinder Sanghera, Jun Zhang, Radha Pattnaik, Larry Merkle, Mark Dubinskii

Proceedings Volume 9344, 934412 (2015) https://doi.org/10.1117/12.2079443

KEYWORDS: Erbium, Optical fibers, Aluminum, Ions, Neptunium, Silica, Fiber lasers, Refractive index, Doping, Nanoparticles

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Proceedings Article | 7 October 2014 Paper

Effects of sputtering technique on quaternary Sputtered Cu(In,Ga)Se2 Films

Jason Myers, Jesse Frantz, Robel Bekele, Vinh Nguyen, Jas Sanghera

Proceedings Volume 9177, 917708 (2014) https://doi.org/10.1117/12.2062213

KEYWORDS: Copper indium gallium selenide, Sputter deposition, Selenium, Copper, Thin films, Molybdenum, Fabrication, Thin film solar cells, Photovoltaics, Gallium

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Proceedings Article | 10 September 2014 Paper

Synthesis of high purity metal oxide nanoparticles for optical applications

C. Baker, W. Kim, E. Friebele, G. Villalobos, J. Frantz, L. Shaw, B. Sadowski, J. Fontana, M. Dubinskii, J. Zhang, J. Sanghera

Proceedings Volume 9161, 91610D (2014) https://doi.org/10.1117/12.2061082

KEYWORDS: Nanoparticles, Ceramics, Oxygen, Oxides, Spinel, Metals, Fiber lasers, Doping, Particles, Transmittance

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Proceedings Article | 5 September 2014 Paper

Rugged sensor window materials for harsh environments

Shyam Bayya, Guillermo Villalobos, Woohong Kim, Jasbinger Sanghera, Michael Hunt, Ishwar Aggarwal

Proceedings Volume 9202, 92021D (2014) https://doi.org/10.1117/12.2062160

KEYWORDS: Spinel, Absorption, Sapphire, Silica, Polishing, Sensors, Mid-IR, Infrared imaging, Imaging systems, Ceramics

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Proceedings Article | 1 July 2014 Paper

Layered chalcogenide glass structures for IR lenses

Daniel Gibson, Shyam Bayya, Jas Sanghera, Vinh Nguyen, Dean Scribner, Velimir Maksimovic, John Gill, Allen Yi, John Deegan, Blair Unger

Proceedings Volume 9070, 90702I (2014) https://doi.org/10.1117/12.2050479

KEYWORDS: Glasses, Infrared imaging, Thermography, Long wavelength infrared, Chalcogenide glass, Infrared lenses, Surface finishing, Aspheric lenses, Imaging systems, Optical design

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Proceedings Article | 1 July 2014 Paper

Multispectral optics designs using expanded glass map

Shyam Bayya, Daniel Gibson, Vinh Nguyen, Erin Fleet, Jay Vizgaitis, Jasbinder Sanghera

Proceedings Volume 9070, 90702G (2014) https://doi.org/10.1117/12.2050624

KEYWORDS: Glasses, Optical design, Long wavelength infrared, Mid-IR, Imaging systems, Modulation transfer functions, Short wave infrared radiation, Diffraction, Crystals, Infrared imaging

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Proceedings Article | 9 June 2014 Paper

Holmium-doped laser materials for eye-safe solid state laser application

Woohong Kim, Steven Bowman, Colin Baker, Guillermo Villalobos, Brandon Shaw, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 9081, 908105 (2014) https://doi.org/10.1117/12.2050922

KEYWORDS: Holmium, YAG lasers, Ceramics, Crystals, Solid state lasers, Silica, Glasses, Laser applications, Laser crystals, Coating

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Proceedings Article | 29 May 2014 Paper

Investigation of disturbed earth detection in the very long wavelength infrared (VLWIR)

K. Ewing, J. Sanghera

Proceedings Volume 9072, 90721E (2014) https://doi.org/10.1117/12.2058869

KEYWORDS: Silica, Particles, Reflectivity, Neodymium, Long wavelength infrared, Infrared radiation, Land mines, Infrared imaging, Target detection, Black bodies

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Proceedings Article | 29 May 2014 Paper

Filter-based chemical sensors for hazardous materials

Kevin Major, Kenneth Ewing, Menelaos Poutous, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 9072, 907212 (2014) https://doi.org/10.1117/12.2050437

KEYWORDS: Optical filters, Explosives, FT-IR spectroscopy, Infrared radiation, Infrared spectroscopy, Absorption, Humidity, Gaussian filters, Explosives detection, Environmental sensing

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Proceedings Article | 12 March 2014 Paper

Single mode fibers with antireflective surface structures for high power laser applications

Lynda Busse, Catalin Florea, L. Brandon Shaw, Ishwar Aggarwal, Jasbinder Sanghera

Proceedings Volume 8961, 89611M (2014) https://doi.org/10.1117/12.2041796

KEYWORDS: Silica, Fiber lasers, Antireflective coatings, Optical fibers, Single mode fibers, High power lasers, Etching, Laser damage threshold, Laser induced damage, Collimators

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Proceedings Article | 6 March 2014 Paper

Surface transmission enhancement of ZnS via continuous-wave laser microstructuring

Kevin Major, Catalin Florea, Menelaos Poutous, Lynda Busse, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 8968, 896810 (2014) https://doi.org/10.1117/12.2036790

KEYWORDS: Zinc, Continuous wave operation, Laser ablation, Thin films, Surface roughness, Femtosecond phenomena, Ultraviolet radiation, Refractive index, Raster graphics, Fermium

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Proceedings Article | 28 February 2014 Paper

Antireflective surface structures on optics for high energy lasers

Lynda Busse, Catalin Florea, L. Brandon Shaw, Jesse Frantz, Shyam Bayya, Menelaos Poutous, Rajendra Joshi, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8959, 89591L (2014) https://doi.org/10.1117/12.2041025

KEYWORDS: Silica, Antireflective coatings, Ceramics, Spinel, Laser damage threshold, Crystals, Reflection, Lenses, Laser applications, Surface finishing

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Proceedings Article | 20 February 2014 Paper

Towards mid-infrared supercontinuum generation: Ge-Sb-Se mid-infrared step-index small-core optical fiber

J. Butterworth, D. Jayasuriya, Q. Li, D. Furniss, N. Moneim, E. Barney, S. Sujecki, T. Benson, J. Sanghera, A. Seddon

Proceedings Volume 8938, 89380W (2014) https://doi.org/10.1117/12.2039357

KEYWORDS: Glasses, Mid-IR, Cladding, Chalcogenide glass, Antimony, Optical fibers, Selenium, Supercontinuum generation, Germanium, Cancer

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SPIE Journal Paper | 13 January 2014 Open Access

Bend loss in multimode chalcogenide fiber at infrared wavelengths

Rafael Gattass, Frederic Kung, Lynda Busse, L. Brandon Shaw, Jasbinder Sanghera

OE, Vol. 53, Issue 01, 010502, (January 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.1.010502

KEYWORDS: Multimode fibers, Chalcogenides, Infrared radiation, Cladding, Optical fibers, Signal attenuation, Mid-IR, FT-IR spectroscopy, Packaging, Absorption

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Proceedings Article | 15 October 2013 Paper

Maximizing the bandwidth while minimizing the spectral fluctuations using supercontinuum generation in photonic crystal chalcogenide fibers

C. Menyuk, R. Weiblen, J. Hu, L. Shaw, J. Sanghera, I. Aggarwal

Proceedings Volume 8898, 88980C (2013) https://doi.org/10.1117/12.2031967

KEYWORDS: Chalcogenides, Supercontinuum generation, Photonic crystals, Solitons, Visible radiation, Mid-IR, Silica, Four wave mixing, Dispersion, Raman spectroscopy

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Proceedings Article | 30 September 2013 Paper

Recent developments in transparent spinel ceramic and composite windows

Shyam Bayya, Guillermo Villalobos, Woohong Kim, Jas Sanghera, Geoff Chin, Michael Hunt, Bryan Sadowski, Fritz Miklos, Ishwar Aggarwal

Proceedings Volume 8837, 88370V (2013) https://doi.org/10.1117/12.2024111

KEYWORDS: Spinel, Glasses, Absorption, Ceramics, Composites, Polishing, Silica, Antireflective coatings, Laser energy, Surface finishing

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Proceedings Article | 30 September 2013 Paper

Development of transparent polycrystalline beta-silicon carbide

Shyam Bayya, Guillermo Villalobos, Michael Hunt, Jasbinder Sanghera, Bryan Sadowski, Ishwar Aggarwal, Michael Cinibulk, Carmen Carney, Kristin Keller

Proceedings Volume 8837, 88370S (2013) https://doi.org/10.1117/12.2023954

KEYWORDS: Silicon carbide, Carbon, Silica, Crystals, Ceramics, Sol-gels, Ions, Nitrogen, Opacity, Neodymium

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Proceedings Article | 18 June 2013 Paper

New multiband IR imaging optics

Shyam Bayya, Jasbinder Sanghera, Woohong Kim, Daniel Gibson, Erin Fleet, Brandon Shaw, Michael Hunt, Ishwar Aggarwal

Proceedings Volume 8704, 870428 (2013) https://doi.org/10.1117/12.2016332

KEYWORDS: Glasses, Long wavelength infrared, Imaging systems, Mid-IR, Short wave infrared radiation, Infrared imaging, Ceramics, Optical design, Chemical elements, Germanium

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Proceedings Article | 4 June 2013 Paper

Recent advancements in anti-reflective surface structures (ARSS) for near- to mid-infrared optics

Catalin Florea, Lynda Busse, Shyam Bayya, Brandon Shaw, Ish Aggarwal, Jas Sanghera

Proceedings Volume 8708, 87080P (2013) https://doi.org/10.1117/12.2016080

KEYWORDS: Silica, Spinel, Crystals, Ceramics, Nd:YAG lasers, Surface finishing, Reflection, Antireflective coatings, Laser damage threshold, Scanning electron microscopy

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Proceedings Article | 31 May 2013 Paper

Rugged spinel windows and optics for harsh environments

Shyam Bayya, Guillermo Villalobos, Woohong Kim, Lynda Busse, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 8720, 872007 (2013) https://doi.org/10.1117/12.2016309

KEYWORDS: Spinel, Resistance, Absorption, Sapphire, Silica, Ceramics, Antireflective coatings, Fiber optic gyroscopes, Polishing, Laser energy

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Proceedings Article | 31 May 2013 Paper

Thermal and vibration testing of ruggedized IR-transmitting fiber cables

Lynda Busse, Fred Kung, Catalin Florea, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8720, 87200T (2013) https://doi.org/10.1117/12.2016156

KEYWORDS: Eye, Fiber lasers, Thermography, High power lasers, Reflection, Infrared lasers, Polishing, Reliability, Mid-IR, Humidity

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Proceedings Article | 23 May 2013 Paper

Recent advancements in transparent ceramics and crystal fibers for high power lasers

W. Kim, C. Baker, G. Villalobos, C. Florea, D. Gibson, L. Shaw, S. Bowman, S. Bayya, B. Sadowski, M. Hunt, C. Askins, J. Peele, I. Aggarwal, J. Sanghera

Proceedings Volume 8733, 87330V (2013) https://doi.org/10.1117/12.2018421

KEYWORDS: Optical fibers, Crystals, Ceramics, Glasses, Laser crystals, Fiber lasers, Laser applications, High power lasers, Cladding, Laser development

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Proceedings Article | 18 March 2013 Paper

Doped sesquioxide ceramic for eye-safe solid state laser materials

Woohong Kim, Colin Baker, Catalin Florea, Jesse Frantz, Guillermo Villalobos, Brandon Shaw, Steve Bowman, Shawn O'Connor, Bryan Sadowski, Michael Hunt, Ishwar Aggalwar, Jasbinder Sanghera

Proceedings Volume 8599, 85990J (2013) https://doi.org/10.1117/12.2004524

KEYWORDS: Ceramics, Holmium, Coating, Solid state lasers, Ions, Crystals, Doping, Lutetium, Transmittance, YAG lasers

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Proceedings Article | 11 March 2013 Paper

Environmental testing and laser transmission results for ruggedized high power IR fiber cables

Lynda Busse, Frederic Kung, Catalin Florea, Brandon Shaw, Ishwar Aggarwal, Jas Sanghera

Proceedings Volume 8621, 86210Y (2013) https://doi.org/10.1117/12.2005004

KEYWORDS: Fiber lasers, Eye, Thermography, Mid-IR, Chalcogenides, Reflection, Polishing, Reliability, High power lasers, Laser induced damage

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Proceedings Article | 26 February 2013 Paper

Crystal fibers for high power lasers

W. Kim, C. Florea, D. Gibson, J. Peele, C. Askins, B. Shaw, S. Bowman, S. O'Connor, S. Bayya, I. Aggarwal, J. Sanghera

Proceedings Volume 8601, 86012Z (2013) https://doi.org/10.1117/12.2004632

KEYWORDS: Crystals, Optical fibers, Glasses, Laser crystals, Fiber lasers, YAG lasers, Cladding, Ceramics, High power lasers, Ions

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Proceedings Article | 8 November 2012 Paper

Single crystal fibers for high power lasers

W. Kim, C. Florea, C. Baker, D. Gibson, L. B. Shaw, S. Bowman, S. O'Connor, G. Villalobos, S. Bayya, I. Aggarwal, J. Sanghera

Proceedings Volume 8547, 85470K (2012) https://doi.org/10.1117/12.974848

KEYWORDS: Optical fibers, Crystals, Fiber lasers, Laser crystals, Ceramics, Polishing, YAG lasers, Image quality, Surface finishing, High power lasers

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SPIE Journal Paper | 5 October 2012

Ceramic windows and gain media for high-energy lasers

Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Brandon Shaw, Shyam Bayya, Bryan Sadowski, Ishwar Aggarwal, Michael Hunt, Jasbinder Sanghera

OE, Vol. 52, Issue 2, 021003, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.52.2.021003

KEYWORDS: Ceramics, Ytterbium, Spinel, Lutetium, Composites, Holmium, Absorption, Glasses, Silica, Luminescence

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Proceedings Article | 2 March 2012 Paper

Recent developments in the fabrication of infrared fiber Bragg gratings

Lynda Busse, Catalin Florea, Brandon Shaw, Jas Sanghera, Vinh Nguyen, Geoff Chin, Ishwar Aggarwal

Proceedings Volume 8257, 82570G (2012) https://doi.org/10.1117/12.909302

KEYWORDS: Glasses, Reflectivity, Doping, Infrared radiation, Silver, Absorption, Fiber Bragg gratings, Lead, Arsenic, Copper

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Proceedings Article | 2 March 2012 Paper

Recent advancements in multiband IR sensor windows

Shyam Bayya, Jasbinder Sanghera, Woohong Kim, Guillermo Villalobos, Ishwar Aggarwal

Proceedings Volume 8257, 825703 (2012) https://doi.org/10.1117/12.910149

KEYWORDS: Glasses, Spinel, Ceramics, Mid-IR, Zinc, Infrared imaging, Short wave infrared radiation, Long wavelength infrared, Imaging systems, Sapphire

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Proceedings Article | 15 February 2012 Paper

Ceramic materials for high power solid state lasers

W. Kim, C. Baker, G. Villalobos, L. B. Shaw, B. Sadowski, J. Frantz, I. D. Aggarwal, J. Sanghera

Proceedings Volume 8235, 823508 (2012) https://doi.org/10.1117/12.924132

KEYWORDS: Ceramics, Particles, Ytterbium, High power lasers, Solid state lasers, Lutetium, YAG lasers, Crystals, Oxygen, Liquids

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Proceedings Article | 5 October 2011 Paper

Development of ceramic laser host materials.

Jasbinder Sanghera, Woohong Kim, Guillermo Villalobos, Brandon Shaw, Colin Baker, Jesse Frantz, Michael Hunt, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 8187, 81870G (2011) https://doi.org/10.1117/12.903736

KEYWORDS: Ceramics, Crystals, YAG lasers, Pulsed laser operation, Nd:YAG lasers, Laser crystals, Laser development, Ytterbium, Composites, Scattering

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Proceedings Article | 3 June 2011 Paper

Mid-infrared optical fiber Fourier transform infrared spectrometer

Kenneth Ewing, L. Brandon Shaw, Rick Kim, Rafael Gattass, Jas Sanghera, Ish Aggarwal

Proceedings Volume 8018, 80180U (2011) https://doi.org/10.1117/12.883529

KEYWORDS: Optical fibers, FT-IR spectroscopy, Mid-IR, Infrared spectroscopy, Sensors, Interferometers, Chalcogenides, Infrared radiation, Supercontinuum sources, Spectroscopy

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Proceedings Article | 21 May 2011 Paper

Influence of Spinel head window thickness on the performance characteristics of a submarine panoramic infrared imaging system

Jonathan Nichols, Jim Waterman, Shyam Bayya, Jas Sanghera, Ish Aggarwal

Proceedings Volume 8012, 80122C (2011) https://doi.org/10.1117/12.884521

KEYWORDS: Spinel, Imaging systems, Sensors, Head, Panoramic photography, Cameras, Infrared imaging, Mid-IR, Silica, Germanium

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Proceedings Article | 13 May 2011 Paper

IR imaging bundles for HWIL testing

Brandon Shaw, Dan Gibson, Vinh Nguyen, Rafael Gattass, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 8015, 801503 (2011) https://doi.org/10.1117/12.884536

KEYWORDS: Infrared imaging, Sensors, Projection systems, Infrared sensors, Chalcogenides, Analytical research, Fiber lasers, Imaging arrays, Fiber couplers, Adhesives

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Proceedings Article | 11 May 2011 Paper

Transparent ceramics for high-power solid-state lasers

Jasbinder Sanghera, Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Brandon Shaw, Shyam Bayya, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal

Proceedings Volume 8039, 803903 (2011) https://doi.org/10.1117/12.882806

KEYWORDS: Ceramics, Spinel, High power lasers, Absorption, Solid state lasers, Sapphire, Crystals, YAG lasers, Transparency, Fabrication

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SPIE Journal Paper | 1 March 2011

Broadband beam steering using chalcogenide-based Risley prisms

Catalin Florea, Jasbinder Sanghera, Ishwar Aggarwal

OE, Vol. 50, Issue 03, 033001, (March 2011) https://doi.org/10.1117/12.10.1117/1.3551503

KEYWORDS: Prisms, Beam steering, Selenium, Infrared radiation, Chalcogenide glass, Refractive index, Optical engineering, Laser induced fluorescence, Zinc, Telecommunications

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Proceedings Article | 1 March 2011 Paper

Improved laser damage threshold for chalcogenide glasses through surface microstructuring

Catalin Florea, Jasbinder Sanghera, Lynda Busse, Brandon Shaw, Ishwar Aggarwal

Proceedings Volume 7946, 794610 (2011) https://doi.org/10.1117/12.877292

KEYWORDS: Optical fibers, Glasses, Laser damage threshold, Silicon, Chalcogenide glass, Nickel, Antireflective coatings, Laser induced damage, Data modeling, FT-IR spectroscopy

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Proceedings Article | 22 February 2011 Paper

All-fiber mid-IR supercontinuum source from 1.5 to 5 µm

L. Brandon Shaw, Rafael Gattass, Jas Sanghera, Ishwar Aggarwal

Proceedings Volume 7914, 79140P (2011) https://doi.org/10.1117/12.877772

KEYWORDS: Dispersion, Mid-IR, Supercontinuum sources, Chalcogenides, Fiber lasers, Raman spectroscopy, Supercontinuum generation, Step index fibers, Optical fibers, Erbium

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Proceedings Article | 16 February 2011 Paper

Ceramic laser materials

Jasbinder Sanghera, Brandon Shaw, Woohong Kim, Guillermo Villalobos, Colin Baker, Jesse Frantz, Michael Hunt, Bryan Sadowski, Ishwar Aggarwal

Proceedings Volume 7912, 79121Q (2011) https://doi.org/10.1117/12.879521

KEYWORDS: Ceramics, Crystals, YAG lasers, Pulsed laser operation, Nd:YAG lasers, Laser crystals, Composites, Laser scattering, Scattering, Ions

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Proceedings Article | 28 April 2009 Paper

Recent developments in transparent polycrystalline spinel for electro-optic applications

Ishwar Aggarwal, Shyam Bayya, Guillermo Villalobos, Woohong Kim, Jasbinder Sanghera

Proceedings Volume 7302, 73020F (2009) https://doi.org/10.1117/12.820465

KEYWORDS: Spinel, Absorption, Glasses, Silica, Diffusion, Polishing, Wavefronts, Resistance, Antireflective coatings, Electro optics

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Proceedings Article | 30 April 2007 Paper

IR fiber sources for scene projection

L. B. Shaw, J. Sanghera, I. Aggarwal

Proceedings Volume 6544, 65440K (2007) https://doi.org/10.1117/12.724271

KEYWORDS: Mid-IR, Infrared imaging, Long wavelength infrared, Supercontinuum sources, Glasses, Optical fibers, Fiber lasers, Chalcogenides, Ions, Chalcogenide glass

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Proceedings Article | 20 February 2007 Paper

Chalcogenide glass fiber-based MID-IR sources and applications

Ishwar Aggarwal, L. Brandon Shaw, Jas Sanghera

Proceedings Volume 6453, 645312 (2007) https://doi.org/10.1117/12.706532

KEYWORDS: Glasses, Raman spectroscopy, Fiber lasers, Chalcogenide glass, Silica, Mid-IR, Fluorine, Chalcogenides, Long wavelength infrared, Selenium

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Proceedings Article | 28 June 2006 Paper

Measurement of spatial filtering capabilities of single mode infrared fibers

A. Ksendzov, E. Bloemhof, V. White, J. Wallace, R. Gappinger, J. Sanghera, L. Busse, W. Kim, P. Pureza, V. Nguyen, I. Aggarwal, S. Shalem, A. Katzir

Proceedings Volume 6268, 626838 (2006) https://doi.org/10.1117/12.673388

KEYWORDS: Optical fibers, Cladding, Signal attenuation, Spatial filters, Infrared radiation, Single mode fibers, Fiber optic illuminators, Wavefronts, Analytical research, Interferometers

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Proceedings Article | 19 May 2005 Paper

Infrared fibers for defense against MANPAD systems

J. Sanghera, L. Busse, I. Aggarwal, F. Chenard

Proceedings Volume 5781, (2005) https://doi.org/10.1117/12.602564

KEYWORDS: Optical fibers, Missiles, Head, Infrared radiation, Chalcogenide glass, Defense systems, Infrared imaging, Defense and security, Glasses, Mid-IR

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Proceedings Article | 18 May 2005 Paper

VIS-IR transmitting windows

S. Bayya, G. Chin, G. Villalobos, J. Sanghera, I. Aggarwal

Proceedings Volume 5786, (2005) https://doi.org/10.1117/12.603753

KEYWORDS: Glasses, Spinel, Zinc, Reconnaissance, Domes, Analytical research, Refractive index, Magnesium, Laser applications, Laser energy

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Proceedings Article | 22 April 2005 Paper

Chalcogenide glass for mid- and longwave IR fiber lasers

Ishwar Aggarwal, L. Shaw, Jasbinder Sanghera

Proceedings Volume 5709, (2005) https://doi.org/10.1117/12.596994

KEYWORDS: Fiber lasers, Raman spectroscopy, Mid-IR, Glasses, Chalcogenide glass, Silica, Fluorine, Long wavelength infrared, Amplifiers, Infrared lasers

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Proceedings Article | 16 December 2004 Paper

Kromoscopy for detection of chemical warfare agents

Kenneth Ewing, Jas Sanghera, Ishwar Aggarwal, Myron Block

Proceedings Volume 5585, (2004) https://doi.org/10.1117/12.575636

KEYWORDS: Sensors, Carbon, Optical filters, Absorbance, Nerve agents, Mid-IR, Infrared sensors, Beam splitters, Toxic industrial chemicals

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SPIE Journal Paper | 1 October 2003 Open Access

Delivery of midinfrared (6 to 7-μm) laser radiation in a liquid environment using infrared-transmitting optical fibers

Mark Mackanos, E. Duco Jansen, Brandon Shaw, Jasbinder Sanghera, Ishwar Aggarwal, Abraham Katzir

JBO, Vol. 8, Issue 04, (October 2003) https://doi.org/10.1117/12.10.1117/1.1606460

KEYWORDS: Tissues, Liquids, Silver, Absorption, Laser ablation, Free electron lasers, Arsenic, Fiber lasers, Laser damage threshold, Laser tissue interaction

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Proceedings Article | 26 September 2003 Paper

VIS-IR transmitting BGG glass windows

Shyam Bayya, Geoff Chin, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 5078, (2003) https://doi.org/10.1117/12.487723

KEYWORDS: Glasses, Aluminum, Crystals, Laser scattering, Electromagnetic coupling, Wavefronts, Signal attenuation, Ku band, Sapphire, Visible radiation

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Proceedings Article | 16 July 2003 Paper

Highly nonlinear chalcogenide glasses for all-optical switching

J. Harbold, F. Ilday, Frank Wise, Jasbinder Sanghera, Ishwar Aggarwal, Bruce Aitken

Proceedings Volume 5061, (2003) https://doi.org/10.1117/12.517340

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Proceedings Article | 3 July 2003 Paper

Rare-earth-doped chalcogenide glass for mid- and long-wave IR fiber lasers

L. Brandon Shaw, Peter Thielen, Jasbinder Sanghera, Shyam Bayya, Ishwar Aggarwal

Proceedings Volume 4974, (2003) https://doi.org/10.1117/12.478276

KEYWORDS: Mid-IR, Fiber lasers, Glasses, Long wavelength infrared, Terbium, Chalcogenide glass, Dysprosium, Quantum efficiency, Infrared lasers, Infrared spectroscopy

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Proceedings Article | 19 June 2003 Paper

Fabrication of As-S and As-Se optical fiber with low hydrogen impurities using tellurium tetrachloride (TeCl₄)

Vinh Nguyen, Jasbinder Sanghera, Brian Cole, Pablo Pureza, Frederic Kung, Ishwar Aggarwal

Proceedings Volume 4987, (2003) https://doi.org/10.1117/12.473172

KEYWORDS: Glasses, Arsenic, Hydrogen, Optical fibers, Signal attenuation, Absorption, Neodymium, Tellurium, Carbon dioxide, Oxygen

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Proceedings Article | 28 March 2002 Paper

Raman amplification in As-Se fiber

Peter Thielen, L. Brandon Shaw, Pablo Pureza, Vinh Nguyen, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 4628, (2002) https://doi.org/10.1117/12.460818

KEYWORDS: Raman spectroscopy, Glasses, Silica, Fiber amplifiers, Raman scattering, Transparency, Amplifiers, Chalcogenide glass, Selenium, Long wavelength infrared

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Proceedings Article | 8 March 2002 Paper

Optical Internet security

Lynn Keuthan, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 4738, (2002) https://doi.org/10.1117/12.458768

KEYWORDS: Signal detection, Information security, Optical communications, Network security, Optical fibers, Glasses, Fiber optic communications, Defense and security, Internet, Telecommunications

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Proceedings Article | 7 September 2001 Paper

VIS-IR transmitting BGG glass and glass-ceramics

Shyam Bayya, Joshua Wojcik, Jasbinder Sanghera, Ishwar Aggarwal, Joel Askinazi

Proceedings Volume 4375, (2001) https://doi.org/10.1117/12.439194

KEYWORDS: Glasses, Composites, Crystals, Polishing, Sapphire, Ceramics, Optical coatings, Wavefronts, Absorption, Visible radiation

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Proceedings Article | 31 August 2001 Paper

Development of IR-emitting infrared fibers at the Naval Research Laboratory

L. Brandon Shaw, Brian Cole, Jasbinder Sanghera, Ishwar Aggarwal, Frederic Kung, Shyam Bayya, Reza Mossadegh, Peter Thielen, James Kircher, Robert Lee Murrer

Proceedings Volume 4366, (2001) https://doi.org/10.1117/12.438060

KEYWORDS: Optical fibers, Mid-IR, Long wavelength infrared, Chalcogenide glass, Ions, Glasses, Analytical research, Terbium, Infrared radiation, Prototyping

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Proceedings Article | 1 March 2001 Paper

Effect of temperature on the loss of the As-S-Se and Ge-As-Se-Te chalcogenide glass fibers

Vinh Nguyen, Jasbinder Sanghera, Frederic Kung, Pablo Pureza, Robert Miklos, Ishwar Aggarwal, Isabel Lloyd

Proceedings Volume 4204, (2001) https://doi.org/10.1117/12.417422

KEYWORDS: Optical fibers, Absorption, Glasses, Temperature metrology, Tellurium, Signal attenuation, Chalcogenide glass, Electrons, Phonons, Rayleigh scattering

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Proceedings Article | 25 October 2000 Paper

VIS-IR transmitting BGG glass and glass-ceramics

Shyam Bayya, Joshua Wojcik, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 4102, (2000) https://doi.org/10.1117/12.405282

KEYWORDS: Glasses, Composites, Crystals, Polishing, Sapphire, Optical coatings, Ceramics, Visible radiation, Wavefronts, Absorption

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Proceedings Article | 17 May 2000 Paper

IR fiber optics for biomedical applications

Jasbinder Sanghera, L. Brandon Shaw, David Talley, Lynda Busse, Ishwar Aggarwal

Proceedings Volume 3907, (2000) https://doi.org/10.1117/12.386287

KEYWORDS: Chalcogenides, Biomedical optics, Surgery, Near field scanning optical microscopy, Spectroscopy, Laser therapeutics, Fiber lasers, Microscopy, Attenuated total reflectance, Free electron lasers

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Proceedings Article | 19 April 2000 Paper

IR fiber optics development at the Naval Research Laboratory

Jasbinder Sanghera, Lynda Busse, Viet Nguyen, Reza Mossadegh, Frederic Kung, Brian Cole, L. Brandon Shaw, Pablo Pureza, Robert Miklos, Ishwar Aggarwal, Yoon-Soo Park

Proceedings Volume 3950, (2000) https://doi.org/10.1117/12.382160

KEYWORDS: Missiles, Head, Glasses, Fiber lasers, Infrared countermeasures, Chalcogenide glass, Fiber optics, Analytical research, Scattering, Defense and security

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Proceedings Article | 17 March 2000 Paper

Improved CL efficiency of coated ZnS:Ag phosphors

Guillermo Villalobos, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 3955, (2000) https://doi.org/10.1117/12.379976

KEYWORDS: Coating, Particles, Field emission displays, Sol-gels, Silica, Luminous efficiency, Metals, Sputter deposition, Manufacturing, Eye

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Proceedings Article | 10 December 1999 Paper

Infrared optical fibers and their applications

Jasbinder Sanghera, L. Brandon Shaw, Lynda Busse, Vinh Nguyen, Brian Cole, Reza Mossadegh, Pablo Pureza, Robert Miklos, Frederic Kung, David Talley, Dominick Roselle, Ishwar Aggarwal

Proceedings Volume 3849, (1999) https://doi.org/10.1117/12.372807

KEYWORDS: Optical fibers, Glasses, Chalcogenides, Chalcogenide glass, Multimode fibers, Infrared radiation, Fiber lasers, Scattering, Absorption, Fiber optics

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SPIE Journal Paper | 1 August 1999

Fabrication of single-mode chalcogenide fiber probes for scanning near-field infrared optical microscopy

David Schaafsma, Reza Mossadegh, Jasbinder Sanghera, Ishwar Aggarwal, M. Luce, Renato Generosi, P. Perfetti, Antonio Cricenti, Jonathan Gilligan, Norman Tolk

OE, Vol. 38, Issue 08, (August 1999) https://doi.org/10.1117/12.10.1117/1.602181

KEYWORDS: Near field scanning optical microscopy, Chalcogenides, Free electron lasers, Fiber lasers, Near field optics, Infrared microscopy, Infrared radiation, Optical microscopy, Absorption, Spatial resolution

Proceedings Article | 21 April 1999 Paper

Infrared-transmitting fiber optics for biomedical applications

Jasbinder Sanghera, L. Brandon Shaw, Lynda Busse, David Talley, Ishwar Aggarwal

Proceedings Volume 3596, (1999) https://doi.org/10.1117/12.346713

KEYWORDS: Chalcogenides, Biomedical optics, Near field scanning optical microscopy, Infrared radiation, Spectroscopy, Glasses, Attenuated total reflectance, Fiber optics, Microscopy, Field spectroscopy

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Proceedings Article | 12 April 1999 Paper

Protectively coated phosphors

Guillermo Villalobos, Shyam Bayya, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 3636, (1999) https://doi.org/10.1117/12.344634

KEYWORDS: Coating, Particles, Tin, Sol-gels, Field emission displays, Indium, Electron beams, Silica, Monte Carlo methods, Luminescence

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Proceedings Article | 13 July 1998 Paper

Rare-earth-doped glass fibers as infrared sources for IRSS

L. Brandon Shaw, David Schaafsma, Brian Cole, Barry Harbison, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 3368, (1998) https://doi.org/10.1117/12.316395

KEYWORDS: Chalcogenide glass, Rare earth doped glasses, Infrared radiation, Scene simulation, Mid-IR, Long wavelength infrared

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Proceedings Article | 2 January 1998 Paper

Fiber optic sensor system for detection of organic contaminants in soil

G. Nau, J. McVicker, Frank Bucholtz, Kenneth Ewing, Sandeep Vohra, Jasbinder Sanghera, Ishwar Aggarwal, Jane Adams, D. Eng

Proceedings Volume 3211, (1998) https://doi.org/10.1117/12.345567

KEYWORDS: Fiber optics sensors, Soil contamination, Infrared spectroscopy, Infrared imaging, Fiber optics, Infrared radiation, Spectroscopy, Soil science

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Proceedings Article | 2 January 1998 Paper

Rare-earth-doped chalcogenide glasses for use in mid-IR sources

John Moon, Barry Harbison, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 3211, (1998) https://doi.org/10.1117/12.345373

KEYWORDS: Chalcogenide glass, Mid-IR, Luminescence

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Proceedings Article | 13 May 1997 Paper

Mid-IR high-power transmission through chalcogenide fibers: current results and future challenges

Lynda Busse, John Moon, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 2966, (1997) https://doi.org/10.1117/12.274278

KEYWORDS: Optical fibers, Glasses, Fiber lasers, Chalcogenides, Antireflective coatings, Laser damage threshold, Infrared lasers, Pulsed laser operation, Carbon dioxide lasers, Optical damage

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Proceedings Article | 27 May 1996 Paper

Midinfrared power delivery through chalcogenide glass-clad optical fibers

Lynda Busse, John Moon, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 2714, (1996) https://doi.org/10.1117/12.240381

KEYWORDS: Optical fibers, Glasses, Carbon dioxide lasers, Continuous wave operation, Laser sources, Fiber lasers, Gas lasers, Chalcogenides, Optical parametric oscillators, Infrared radiation

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Proceedings Article | 15 January 1996 Paper

Optical and mechanical properties of IR-transmitting chalcogenide glass fibers

Jasbinder Sanghera, Pablo Pureza, Lynda Busse, Ishwar Aggarwal

Proceedings Volume 2611, (1996) https://doi.org/10.1117/12.230094

KEYWORDS: Optical fibers, Glasses, Liquids, Nitrogen, Chalcogenide glass, Polymers, Corrosion, Cladding, Coating, Scattering

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Proceedings Article | 9 October 1995 Paper

Fiber optic IR reflectance sensor for the cone penetrometer

Gregory Nau, Frank Bucholtz, Kenneth Ewing, Sandeep Vohra, Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 2504, (1995) https://doi.org/10.1117/12.224110

KEYWORDS: Sensors, Reflectivity, Design for manufacturing, Infrared sensors, Mirrors, Fiber optics, Chalcogenides, Ocean optics, Optical fibers, Absorption

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Proceedings Article | 1 May 1995 Paper

Development of low loss IR transmitting chalcogenide glass fibers

Jasbinder Sanghera, Ishwar Aggarwal, Lynda Busse, Pablo Pureza, Vinh Nguyen, Robert Miklos, Frederic Kung, Reza Mossadegh

Proceedings Volume 2396, (1995) https://doi.org/10.1117/12.208432

KEYWORDS: Optical fibers, Glasses, Sensors, Chalcogenide glass, Absorption, Signal attenuation, Infrared lasers, Laser cutting, Cladding, Reflectivity

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Proceedings Article | 19 January 1995 Paper

Development of low-loss IR optical fibers for optical sensors

Jasbinder Sanghera, Ishwar Aggarwal

Proceedings Volume 2367, (1995) https://doi.org/10.1117/12.199657

KEYWORDS: Glasses, Tellurium, Selenium, Liquids, Signal attenuation, Oxides, Chalcogenide glass, Absorption, Optical fibers, Fiber optics sensors

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Proceedings Article | 28 September 1994 Paper

Chalcogenide glasses containing tellurium for IR fiber optics

Jasbinder Sanghera, Vinh Nguyen, Pablo Pureza, Frederic Kung, Fritz Miklos, Lynda Busse, Ishwar Aggarwal

Proceedings Volume 2290, (1994) https://doi.org/10.1117/12.187404

KEYWORDS: Glasses, Tellurium, Signal attenuation, Chalcogenide glass, Liquids, Oxides, Selenium, Fiber optics, Fiber optics sensors, Absorption

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SPIE Journal Paper | 1 April 1991

Chalcohalide glasses for infrared fiber optics

Jong Heo, Jasbinder Sanghera, John Mackenzie

OE, Vol. 30, Issue 04, (April 1991) https://doi.org/10.1117/12.10.1117/12.55824

KEYWORDS: Glasses, Iodine, Halogens, Bromine, Infrared radiation, Raman spectroscopy, Sulfur, Chemical species, Fiber optics, Optical properties

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Showing 5 of 188 publications

Proceedings Volume Editor (9)

SPIE Conference Volume | 27 June 2024

Advanced Optics for Imaging Applications: UV through LWIR IX

SPIE Conference Volume | 14 July 2023

Advanced Optics for Imaging Applications: UV through LWIR VIII

SPIE Conference Volume | 28 June 2022

Advanced Optics for Imaging Applications: UV through LWIR VII

SPIE Conference Volume | 5 May 2021

Advanced Optics for Imaging Applications: UV through LWIR VI

SPIE Conference Volume | 26 May 2020

Advanced Optics for Imaging Applications: UV through LWIR V

Showing 5 of 9 publications

Conference Committee Involvement (33)

Advanced Optics for Imaging Applications: UV through LWIR X

13 April 2025 | Orlando, Florida, United States

High-Power Lasers and Technologies for Optical Countermeasures II

16 September 2024 | Edinburgh, United Kingdom

Advanced Optics for Imaging Applications: UV through LWIR IX

22 April 2024 | National Harbor, Maryland, United States

Technologies for Optical Countermeasures XIX

5 September 2023 | Amsterdam, Netherlands

Advanced Optics for Imaging Applications: UV through LWIR VIII

1 May 2023 | Orlando, Florida, United States

Specialty Optical Fibres

24 April 2023 | Prague, Czech Republic

High-Power Lasers and Technologies for Optical Countermeasures

6 September 2022 | Berlin, Germany

High-Power Lasers and Technologies for Optical Countermeasures

6 September 2022 | Berlin, Germany

Advanced Optics for Imaging Applications: UV through LWIR VII

3 April 2022 | Orlando, Florida, United States

Technologies for Optical Countermeasures XVIII and High Power Lasers: Technology and Systems, Platforms, Effects V

13 September 2021 | Online Only, Spain

Advanced Optics for Imaging Applications: UV through LWIR VI

12 April 2021 | Online Only, Florida, United States

Technologies for Optical Countermeasures XVII; and High-Power Lasers: Technology and Systems, Platforms, Effects IV

22 September 2020 | Online Only, United Kingdom

Advanced Optics for Imaging Applications: UV through LWIR V

27 April 2020 | Online Only, California, United States

High Power Lasers: Technology and Systems, Platforms, Effects III

11 September 2019 | Strasbourg, France

Fiber Optic Sensors and Applications XVI

16 April 2019 | Baltimore, MD, United States

Advanced Optics for Imaging Applications: UV through LWIR IV

14 April 2019 | Baltimore, MD, United States

High Power Lasers: Technology and Systems, Platforms, Effects

12 September 2018 | Berlin, Germany

Fiber Optic Sensors and Applications XV

17 April 2018 | Orlando, FL, United States

Advanced Optics for Defense Applications: UV through LWIR III

15 April 2018 | Orlando, FL, United States

High Power Lasers: Technology and Systems, Platforms, Effects

13 September 2017 | Warsaw, Poland

Fiber Optic Sensors and Applications XIV

11 April 2017 | Anaheim, CA, United States

Advanced Optics for Defense Applications: UV through LWIR II

9 April 2017 | Anaheim, CA, United States

Fiber Optic Sensors and Applications XIII

18 April 2016 | Baltimore, MD, United States

Advanced Optics for Defense Applications: UV through LWIR

18 April 2016 | Baltimore, MD, United States

Fiber Optic Sensors and Applications XII

22 April 2015 | Baltimore, MD, United States

Infrared Technology and Applications XLI

20 April 2015 | Baltimore, MD, United States

Fiber Lasers V: Technology, Systems, and Applications

21 January 2008 | San Jose, California, United States

Fiber Lasers IV: Technology, Systems, and Applications

22 January 2007 | San Jose, California, United States

Fiber Lasers III: Technology, Systems, and Applications

23 January 2006 | San Jose, California, United States

Fiber Lasers II: Technology, Systems, and Applications

24 January 2005 | San Jose, California, United States

Optical Components and Materials II

24 January 2005 | San Jose, California, United States

Optical Components and Materials

26 January 2004 | San Jose, CA, United States

Rare-Earth-Doped Materials and Devices VII

29 January 2003 | San Jose, CA, United States

Showing 5 of 33 Conference Committees

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