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Dr. Andrew S. Keys
Optical Physicist at NASA Marshall Space Flight Ctr
SPIE Involvement:
Author
Publications (5)
Proceedings Article | 22 December 2003 Paper
Helium cryo testing of an SLMS (silicon lightweight mirrors) athermal optical assembly
Marc Jacoby, William Goodman, H. Philip Stahl, Andrew Keys, Jack Reily, Ron Eng, James Hadaway, William Hogue, Jeffrey Kegley, Richard Siler, Harlan Haight, John Tucker, Ernest Wright, James Carpenter, Jeff McCracken
Proceedings Volume 5180, (2003) https://doi.org/10.1117/12.508378
KEYWORDS: Spatial light modulators, Silicon, Cryogenics, Mirrors, Foam, Lightweight mirrors, Manufacturing, Helium, Optical fabrication, Prototyping
Proceedings Article | 10 November 2003 Paper
Binary-phase Fourier gratings for nonuniform array generation
Andrew Keys, Robert Crow, Paul Ashley
Proceedings Volume 5177, (2003) https://doi.org/10.1117/12.507360
KEYWORDS: Optical design, Algorithms, Optimization (mathematics), Remote sensing, Chemical elements, Detection and tracking algorithms, Transition metals, Energy efficiency, Sensors, Aerospace engineering
Proceedings Article | 26 December 2001 Paper
Characterization of a multilayered dielectric transmissive phase modulator
Andrew Keys, Richard Fork, Thomas Nelson, James Ehret, Joseph Van Nostrand
Proceedings Volume 4438, (2001) https://doi.org/10.1117/12.451482
KEYWORDS: Gallium arsenide, Modulators, Phase shift keying, Phase measurement, Phase modulation, Multilayers, Interferometers, Spectroscopy, Modulation, Phased array optics
Proceedings Article | 26 July 1999 Paper
Electrically tunable group delays using quantum wells in a distributed Bragg reflector
Thomas Nelson, John Loehr, Qianghua Xie, James Ehret, Joseph Van Nostrand, Lisa Gamble, Darryl Jones, Spencer Cole, Rebecca Trimm, William Diffey, Richard Fork, Andrew Keys
Proceedings Volume 3714, (1999) https://doi.org/10.1117/12.354675
KEYWORDS: Quantum wells, Gallium arsenide, Absorption, Refractive index, Excitons, Reflectivity, Distributed Bragg reflectors, Phased array optics, Mirrors, Etching
Proceedings Article | 2 July 1999 Paper
Resonant transmissive modulator construction for use in beam steering arrays
Proceedings Volume 3787, (1999) https://doi.org/10.1117/12.351636
KEYWORDS: Modulators, Phase modulation, Beam steering, Absorption, Modulation, Dielectrics, Phase shift keying, Refractive index, Quantum wells, Wavefronts
Conference Committee Involvement (3)
Free-Space Laser Communications VII
28 August 2007 | San Diego, California, United States
Free-Space Laser Communications VI
15 August 2006 | San Diego, California, United States
Free-Space Laser Communications V
31 July 2005 | San Diego, California, United States
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