Dr. Jeffrey E. Ungar Profile

Dr. Jeffrey E. Ungar

President & CEO at QPC Lasers Inc

SPIE Involvement:

Conference Program Committee | Author

Publications (18)

Proceedings Article | 15 February 2012

Crystalline fiber Ho3+:YAG laser resonantly pumped by high-spectral-brightness laser diodes

Antoine Berrou, Thierry Ibach, Martin Schellhorn, Wentao Hu, Robert Lammert, Laurent Vaissié, Jeff Ungar, Marc Eichhorn

Proc. SPIE. 8235, Solid State Lasers XXI: Technology and Devices

KEYWORDS: Mirrors, Output couplers, Crystals, Reflectivity, Fiber lasers, Semiconductor lasers, Diodes, YAG lasers, Laser crystals, Absorption

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Proceedings Article | 9 February 2012

High-efficiency high-brightness diode lasers at 1470 nm/1550 nm for medical and defense applications

Kendra Gallup, Jeff Ungar, Laurent Vaissie, Rob Lammert, Wentao Hu

Proc. SPIE. 8241, High-Power Diode Laser Technology and Applications X

KEYWORDS: Defense and security, Laser therapeutics, Veins, Laser vision correction, Surgery, High power lasers, Laser applications, Laser development, Semiconductor lasers, Diodes

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Proceedings Article | 3 April 2010

A GPU-based full-chip inverse lithography solution for random patterns

Ilhami Torunoglu, Ahmet Karakas, Erich Elsen, Curtis Andrus, Brandon Bremen, Boris Dimitrov, Jeffrey Ungar

Proc. SPIE. 7641, Design for Manufacturability through Design-Process Integration IV

KEYWORDS: Lithography, Light sources, Logic, Manufacturing, 3D modeling, Photomasks, Algorithm development, Optimization (mathematics), Semiconducting wafers, Process modeling

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Proceedings Article | 7 May 2009

High-power semiconductor lasers at eye-safe wavelengths

Mark Osowski, Yossi Gewirtz, Robert Lammert, Se Oh, Chameli Panja, Victor Elarde, Laurent Vaissie, Falgun Patel, Jeffrey Ungar

Proc. SPIE. 7325, Laser Technology for Defense and Security V

KEYWORDS: Weapons, Fabry–Perot interferometers, LIDAR, High power lasers, Laser applications, Fiber lasers, Semiconductor lasers, Collimation, Diodes

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Proceedings Article | 7 May 2009

Ultracompact visible R-G-B lasers for defense applications

Wentao Hu, Xiaodong Yang, Chun Wang, Yossi Gewirtz, Mark Osowski, Robert Lammert, Se Oh, Victor Elarde, Laurent Vaissie, Falgun Patel, Paul Rudy, Jeffrey Ungar

Proc. SPIE. 7325, Laser Technology for Defense and Security V

KEYWORDS: Defense and security, Continuous wave operation, High power lasers, Crystals, Laser applications, Laser development, Laser marking, Semiconductor lasers, Diodes, RGB color model

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Proceedings Article | 24 February 2009

High-spectral brightness pump sources for diode-pumped solid state lasers

Wentao Hu, Falgun Patel, Mark Osowski, Robert Lammert, Se Oh, Chameli Panja, Victor Elarde, Laurent Vaissié, Jeffrey Ungar

Proc. SPIE. 7198, High-Power Diode Laser Technology and Applications VII

KEYWORDS: Continuous wave operation, High power lasers, Solid state lasers, Fiber lasers, Semiconductor lasers, Diodes, Laser systems engineering, Diode pumped solid state lasers, Absorption

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Proceedings Article | 24 February 2009

Reliability of single-mode and multi-mode high-power semiconductor lasers at eye-safe wavelengths

T. Stakelon, J. Lucas, M. Osowski, R. Lammert, S. Moon, C. Panja, V. Elarde, K. Gallup, W. Hu, J. Ungar

Proc. SPIE. 7198, High-Power Diode Laser Technology and Applications VII

KEYWORDS: Fabry–Perot interferometers, Optical amplifiers, Semiconductor optical amplifiers, High power lasers, Reliability, Laser applications, Semiconductor lasers, Diodes, High power fiber amplifiers, Absorption

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Proceedings Article | 7 October 2008

High-power single-mode eye-safe wavelength semiconductor lasers

M. Osowski, W. Hu, R. Lammert, S. Oh, P. Rudy, R. Boehm, T. Stakelon, L. Vaissie, J. Ungar

Proc. SPIE. 7114, Electro-Optical Remote Sensing, Photonic Technologies, and Applications II

KEYWORDS: Near infrared, Fabry–Perot interferometers, Second-harmonic generation, Waveguides, High power lasers, Fiber lasers, Semiconductor lasers, Diodes, Fiber couplers, Nonabsorbing mirrors

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Proceedings Article | 14 April 2008

Advances in high-brightness semiconductor lasers

M. Osowski, W. Hu, R. Lammert, S. Oh, P. Rudy, T. Stakelon, L. Vaissie, J. Ungar

Proc. SPIE. 6952, Laser Source Technology for Defense and Security IV

KEYWORDS: Fabry–Perot interferometers, Second-harmonic generation, Waveguides, High power lasers, Laser applications, Fiber lasers, Semiconductor lasers, Diodes, Fiber couplers, Nonabsorbing mirrors

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Proceedings Article | 13 February 2008

Advances in high-brightness semiconductor lasers

M. Osowski, W. Hu, R. Lammert, S. Oh, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6876, High-Power Diode Laser Technology and Applications VI

KEYWORDS: Fabry–Perot interferometers, Second-harmonic generation, Waveguides, High power lasers, Fiber lasers, Semiconductor lasers, Diodes, Fiber couplers, Fiber coupled lasers, Nonabsorbing mirrors

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Proceedings Article | 10 May 2007

High brightness semiconductor lasers at 1300-1600 nm

M. Osowski, R. Lammert, S. Oh, W. Hu, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6552, Laser Source Technology for Defense and Security III

KEYWORDS: Optical design, Fabry–Perot interferometers, High power lasers, Laser development, Semiconductor lasers, Diodes, Er:YAG lasers, Fiber couplers, Laser optics, Fiber coupled lasers

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Proceedings Article | 10 May 2007

High brightness semiconductor lasers from 780-1064-nm

R. Lammert, W. Hu, S. Oh, M. Osowski, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6552, Laser Source Technology for Defense and Security III

KEYWORDS: Semiconductors, Near infrared, Waveguides, High power lasers, Fiber lasers, Semiconductor lasers, Diodes, Fiber couplers, High power diode lasers, Nonabsorbing mirrors

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Proceedings Article | 14 February 2007

High-brightness semiconductor lasers

M. Osowski, W. Hu, R. Lammert, T. Liu, Y. Ma, S. Oh, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6456, High-Power Diode Laser Technology and Applications V

KEYWORDS: Near infrared, Fabry–Perot interferometers, Waveguides, Fiber Bragg gratings, High power lasers, Laser development, Semiconductor lasers, Diodes, Fiber couplers, Laser optics

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Proceedings Article | 12 May 2006

Advances in high-brightness high-power semiconductor lasers

R. Lammert, S. Oh, M. Osowski, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6216, Laser Source and System Technology for Defense and Security II

KEYWORDS: Mirrors, Fabry–Perot interferometers, Waveguides, Fiber Bragg gratings, High power lasers, Reliability, Laser applications, Semiconductor lasers, Diodes, Laser systems engineering

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Proceedings Article | 12 May 2006

Monolithic semiconductor mid-IR optical parametric oscillators with modal phase matching

R. Lammert, S. Oh, M. Osowski, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6216, Laser Source and System Technology for Defense and Security II

KEYWORDS: Semiconductors, Mid-IR, Continuous wave operation, Optical parametric oscillators, Waveguides, Semiconductor lasers, Phase matching, Nonlinear crystals, Optical semiconductors

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Proceedings Article | 15 February 2006

Advances in high brightness semiconductor lasers

R. Lammert, S. Oh, M. Osowski, C. Panja, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 6104, High-Power Diode Laser Technology and Applications IV

KEYWORDS: Mirrors, Fabry–Perot interferometers, Waveguides, Fiber Bragg gratings, High power lasers, Materials processing, Reliability, Semiconductor lasers, Diodes, High power diode lasers

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Proceedings Article | 10 September 2005

Advances in semiconductor laser bars and arrays

R. Lammert, S. Oh, M. Osowski, C. Panja, D. Qian, P. Rudy, T. Stakelon, J. Ungar

Proc. SPIE. 5887, Lidar Remote Sensing for Environmental Monitoring VI

KEYWORDS: Mirrors, Waveguides, High power lasers, Materials processing, Reliability, Laser development, Solid state lasers, Semiconductor lasers, Diodes, High power diode lasers

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Proceedings Article | 26 June 1992

High-power single-mode strained-layer lasers emitting at 980 nm

Hal Zarem, Joel Paslaski, Michael Mittelstein, Jeffrey Ungar, Israel Ury

Proc. SPIE. 1634, Laser Diode Technology and Applications IV

KEYWORDS: Fiber amplifiers, GRIN lenses, Indium gallium arsenide, High power lasers, Laser applications, Laser development, Reflectivity, Single mode fibers, Fiber lasers, Semiconductor lasers

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Showing 5 of 18 publications

Conference Committee Involvement (2)

Semiconductor Lasers and Applications IV

18 October 2010 | Beijing, China

Semiconductor Lasers and Applications III

12 November 2007 | Beijing, China

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