Dr. Thomas Ehrenreich Profile

Dr. Thomas Ehrenreich

Program Manager at Defense Advanced Research Projects Agency

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

Laser , Fiber , Atomics , Amplifiers , Experimental , Physics

Proceedings Article | 11 April 2024 Presentation + Paper

Beam-combinable high-power fiber laser sources for directed energy applications

Roger Holten, Angel Flores, Thomas Ehrenreich, Brian Anderson, Iyad Dajani

Proceedings Volume 12939, 129390E (2024) https://doi.org/10.1117/12.3013096

KEYWORDS: Polarization, Modulators, Diffractive optical elements, Fiber amplifiers, Beam path, Polarization control, Polarizers, Free space, Directed energy weapons, Control systems, Coherent beam combination, Phase modulation, Phase matching, Beam combiners

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Proceedings Article | 22 February 2017 Paper

Power scaling of a hybrid microstructured Yb-doped fiber amplifier

Cody Mart, Benjamin Pulford, Benjamin Ward, Iyad Dajani, Thomas Ehrenreich, Brian Anderson, Khanh Kieu, Tony Sanchez

Proceedings Volume 10083, 100830X (2017) https://doi.org/10.1117/12.2249863

KEYWORDS: Fiber amplifiers, Photonic crystals, Silica, Scattering, Photonic crystal fibers, Amplifiers, Optical amplifiers, Ytterbium, Diagnostics, Polarization, Structured optical fibers, Cladding

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SPIE Journal Paper | 2 September 2016 Open Access

Multi-kilowatt diffractive coherent combining of pseudorandom-modulated fiber amplifiers

Angel Flores, Iyad Dajani, Roger Holten, Thomas Ehrenreich, Brian Anderson

OE, Vol. 55, Issue 09, 096101, (September 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.9.096101

KEYWORDS: Fiber amplifiers, Diffractive optical elements, Optical amplifiers, Polarization, Beam splitters, Phase modulation, High power fiber amplifiers, Modulation, Phase shift keying, Signal attenuation

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Proceedings Article | 9 March 2016 Paper

Multi-kilowatt power scaling and coherent beam combining of narrow-linewidth fiber lasers

Iyad Dajani, Angel Flores, Roger Holten, Brian Anderson, Benjamin Pulford, Thomas Ehrenreich

Proceedings Volume 9728, 972801 (2016) https://doi.org/10.1117/12.2218216

KEYWORDS: Modulation, Amplifiers, Clocks, Ytterbium, Cladding

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Proceedings Article | 20 March 2015 Paper

Beam combining and SBS suppression in white noise and pseudo-random modulated amplifiers

Brian Anderson, Angel Flores, Roger Holten, Thomas Ehrenreich, Iyad Dajani

Proceedings Volume 9344, 93441U (2015) https://doi.org/10.1117/12.2082713

KEYWORDS: Modulation, Fiber amplifiers, Phase modulation, Visibility, Phase shift keying, Optical amplifiers, Fiber lasers, Clocks, Binary data, Laser scattering

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Proceedings Article | 4 March 2015 Paper

High-power narrow-linewidth large mode area photonic bandgap fiber amplifier

Benjamin Pulford, Iyad Dajani, Thomas Ehrenreich, Roger Holten, Christopher Vergien, Nader Naderi, Cody Mart, Guancheng Gu, Fanting Kong, Thomas Hawkins, Liang Dong

Proceedings Volume 9344, 934406 (2015) https://doi.org/10.1117/12.2082709

KEYWORDS: Fiber amplifiers, Fiber lasers, Amplifiers, Optical amplifiers, Oscillators, Acoustics, Laser applications, Modulation, Multimode fibers, Light scattering

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Proceedings Article | 12 May 2009 Paper

400W monolithic high efficiency 2 µm MOPA

S. Christensen, T. Ehrenreich, V. Khitrov, K. Tankala, A. Carter, B. Samson

Proceedings Volume 7325, 73250C (2009) https://doi.org/10.1117/12.819311

KEYWORDS: Amplifiers, Diodes, Signal attenuation, Fiber amplifiers, Phase modulation, Free space, Oscillators, Semiconductor lasers, Standards development

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Proceedings Article | 19 June 2007 Paper

Optically pumped alkali lasers

Boris Zhdanov, Thomas Ehrenreich, Randall Knize

Proceedings Volume 6537, 653702 (2007) https://doi.org/10.1117/12.753906

KEYWORDS: Cesium, Semiconductor lasers, Potassium, Optical pumping, Laser resonators, Mirrors, Laser development, Diffraction gratings, High power lasers, Absorption

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Proceedings Article | 14 February 2007 Paper

A laser diode array pumped cesium vapor laser

Boris Zhdanov, Thomas Ehrenreich, Randall Knize

Proceedings Volume 6454, 64540M (2007) https://doi.org/10.1117/12.696658

KEYWORDS: Semiconductor lasers, Cesium, Absorption, Diffraction gratings, Laser development, Laser optics, Continuous wave operation, Holography, Optical pumping, Laser resonators

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Proceedings Article | 23 February 2006 Paper

Highly efficient cesium vapor laser

T. Ehrenreich, B. Zhdanov, R. Knize

Proceedings Volume 6101, 610122 (2006) https://doi.org/10.1117/12.645424

KEYWORDS: Cesium, Semiconductor lasers, High power lasers, Optical pumping, Reflectivity, Fiber lasers, Laser resonators, Mirrors, Laser applications, Chemical oxygen iodine lasers

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Showing 5 of 10 publications

Conference Committee Involvement (4)

Laser Technology for Defense and Security XIX

23 April 2024 | National Harbor, Maryland, United States

Laser Technology for Defense and Security XVIII

3 May 2023 | Orlando, Florida, United States

Laser Technology for Defense and Security XVII

5 April 2022 | Orlando, Florida, United States

Laser Technology for Defense and Security XVI

12 April 2021 | Online Only, Florida, United States

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