Dr. Warren N. Herman Profile

Dr. Warren N. Herman

Senior Physicist at Univ of Maryland College Park

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 21 February 2011 Paper

High speed electro-optic polymer phase modulator using an in-plane slotline RF waveguide

Dong Hun Park, Yongzhang Leng, Jingdong Luo, Alex K.-Y. Jen, Warren Herman

Proceedings Volume 7936, 793607 (2011) https://doi.org/10.1117/12.876239

KEYWORDS: Electrodes, Waveguides, Modulators, Cladding, Gold, Polymers, Electro optic polymers, Silica, Silicon, Reactive ion etching

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SPIE Journal Paper | 1 January 2011 Open Access

Low-bandgap small molecules for near-infrared photovoltaic applications

Mihaela Ballarotto, Warren Herman, Danilo Romero

JPE, Vol. 1, Issue 1, 011102, (January 2011) https://doi.org/10.1117/12.10.1117/1.3528044

KEYWORDS: Photovoltaics, Heterojunctions, Molecules, Interfaces, Diodes, Organic photovoltaics, Resistance, Molecular photonics, Aluminum, Electrodes

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Proceedings Article | 16 February 2007 Paper

New paradigm for ultrahigh electro-optic activity: through supramolecular self-assembly and novel lattice hardening

Tae-Dong Kim, Zhengwei Shi, Jingdong Luo, Sei-Hum Jang, Yen-Ju Cheng, Xinghua Zhou, Su Huang, Larry Dalton, Warren Herman, Alex K.-Y. Jen

Proceedings Volume 6470, 64700D (2007) https://doi.org/10.1117/12.716082

KEYWORDS: Chromophores, Polymers, Absorption, Binary data, Glasses, Nonlinear optics, Composites, Dendrimers, Molecular self-assembly, Electro optics

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Proceedings Article | 4 October 2005 Paper

Organic photocells based on block copolymer / C60 blends

R. Barber Jr., M. Breban, R.D. Gomez, W.N. Herman, D.B. Romero

Proceedings Volume 5938, 59381H (2005) https://doi.org/10.1117/12.620309

KEYWORDS: Photovoltaics, Polymers, Organic photovoltaics, Heterojunctions, Quantum efficiency, Molecules, Resistance, Electrodes, Physics, Semiconductors

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Proceedings Article | 18 August 2005 Paper

Nonlinear ellipsometric analysis of poled organic glasses having very large electro-optic coefficients

Dong Park, Jae Kang, Jin Luo, Tae Kim, Alex K.-Y. Jen, Chi Lee, Warren Herman

Proceedings Volume 5935, 59350O (2005) https://doi.org/10.1117/12.620799

KEYWORDS: Reflection, Glasses, Modulation, Electro optics, Chromophores, Polymers, Electrodes, Refractive index, Gold, Multilayers

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Proceedings Article | 18 August 2005 Paper

Exceptional electro-optic properties through molecular design and controlled self-assembly

Alex Jen, Jingdong Luo, Tae-Dong Kim, Baoquan Chen, Sei-Hum Jang, Jae-Wook Kang, Neil Tucker, Steven Hau, Yanqing Tian, Jae-Won Ka, Marnie Haller, Yi Liao, Bruce Robinson, Larry Dalton, Warren Herman

Proceedings Volume 5935, 593506 (2005) https://doi.org/10.1117/12.620806

KEYWORDS: Chromophores, Polymers, Nonlinear optics, Fluorine, Silicon, Chemistry, Bridges, Electro optics, Glasses, Molecular self-assembly

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Proceedings Article | 15 October 2004 Paper

Advances in polymer optical devices and waveguide fabrication techniques

Warren Herman, Wei-Yen Chen, Younggu Kim, Glenn Hutchinson, Wei Lou Cao, Yongzhang Leng, Victor Yun, Hongye Liang, Yi-Hsing Peng, Min Du, Lisa Lucas, Ping-Tong Ho, Julius Goldhar, Chi Lee

Proceedings Volume 5517, (2004) https://doi.org/10.1117/12.560029

KEYWORDS: Polymers, Waveguides, Polymer multimode waveguides, Microrings, Resonators, Bistability, Switches, Fabrication, Refractive index, Picosecond phenomena

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Proceedings Article | 18 December 2002 Paper

Methods for estimating the refractive index profile at near infrared wavelengths of polymers for optical waveguides

Andrew Guenthner, Geoffrey Lindsay, Peter Zarras, Stephen Fallis, Joni Pentony, Warren Herman

Proceedings Volume 4798, (2002) https://doi.org/10.1117/12.452117

KEYWORDS: Refractive index, Polymers, Chemical species, Waveguides, Near infrared, Birefringence, Glasses, Polarizability, Nitrogen, Crystals

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Proceedings Article | 19 May 2000 Paper

Acentric nonlinear optical films by alternating polyelectrolyte deposition

M. Joseph Roberts, Warren Herman

Proceedings Volume 3939, (2000) https://doi.org/10.1117/12.386379

KEYWORDS: Avalanche photodetectors, Chromophores, Second-harmonic generation, Nonlinear optics, Polymers, Atomic force microscopy, Glasses, Polymer thin films, Multilayers, Absorbance

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Proceedings Article | 11 October 1999 Paper

Multilayer X(2) films from porphyrin chromophores by LBK processing

Geoffrey Lindsay, Randall Kolega, M. Joseph Roberts, Harry Uyeda, Michael Therien, Warren Herman

Proceedings Volume 3796, (1999) https://doi.org/10.1117/12.368288

KEYWORDS: Chromophores, Second-harmonic generation, Polymers, Multilayers, Nonlinear optics, Glasses, Polymer thin films, Electro optics, Absorption, Molecules

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Proceedings Article | 18 May 1999 Paper

Nonlinear optical films by alternating polyelectrolyte deposition

M. Joseph Roberts, Warren Herman, Geoffrey Lindsay, Kenneth Wynne

Proceedings Volume 3623, (1999) https://doi.org/10.1117/12.348392

KEYWORDS: Avalanche photodetectors, Second-harmonic generation, Glasses, Chromophores, Polymers, Absorbance, Signal detection, Temperature metrology, Nonlinear optics, Weapons

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Proceedings Article | 22 January 1997 Paper

High-performance electro-optic polymers for high-frequency modulators

Geoffrey Lindsay, Andrew Chafin, Roy Gratz, Richard Hollins, Melvin Nadler, Eric Nickel, John Stenger-Smith, Rena Yee, Warren Herman, Peter Zarris, Paul Ashley

Proceedings Volume 3006, (1997) https://doi.org/10.1117/12.264248

KEYWORDS: Polymers, Chromophores, Electro optic polymers, Waveguides, Modulators, Absorption, Glasses, Resonance enhancement, Electro optics, Refractive index

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Proceedings Article | 1 November 1996 Paper

Extended accordion polymers for optical modulation

Geoffrey Lindsay, Andrew Chafin, Richard Hollins, L. Merwin, John Stenger-Smith, Rena Yee, Eric Nickel, Warren Herman

Proceedings Volume 2852, (1996) https://doi.org/10.1117/12.256186

KEYWORDS: Polymers, Chromophores, Polymerization, Crystals, Modulation, Glasses, Absorption, Nonlinear optics, Refractive index, Nitrogen

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Proceedings Article | 1 March 1994 Paper

Radiation effects on polymer waveguides: accelerated aging tests

Warren Herman, Alvin Kanofsky

Proceedings Volume 2074, (1994) https://doi.org/10.1117/12.168626

KEYWORDS: Polymers, Nonlinear optics, Polymer multimode waveguides, Chromophores, Polymer thin films, Glasses, Radiation effects, Waveguides, Polymethylmethacrylate, Second-harmonic generation

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Proceedings Article | 6 April 1993 Paper

Radiation effects on polymer waveguides

Alvin Kanofsky, Warren Herman

Proceedings Volume 1794, (1993) https://doi.org/10.1117/12.141889

KEYWORDS: Polymers, Polymer multimode waveguides, Nonlinear optics, Second-harmonic generation, Waveguides, Chromophores, Polymer thin films, Radiation effects, Glasses, Electro optic polymers

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Proceedings Article | 1 February 1992 Paper

1.25-Gb/s LED-based optical transmitter

Warren Rosen, Warren Herman, Afshin Daryoush, T. Daniel

Proceedings Volume 1580, (1992) https://doi.org/10.1117/12.135389

KEYWORDS: Light emitting diodes, Modulators, Transmitters, Switches, Fiber optic components, Modulation, Polarizers, Fiber amplifiers, Optical amplifiers, Directional couplers

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