Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1994-02-09
1996-05-21
Epps, Georgia Y.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
250332, G02F 103
Patent
active
055195296
ABSTRACT:
A device for converting a mid-wave infrared or long-wave infrared thermal image into a coherent near-infrared image includes a two-dimensional array of quantum-well-based optical modulators and infrared photodetectors. Each modulator is integrated or hybridized with a respective photodetector, and the combination is connected to an electronic circuit. Variations in mid-IR or long-IR light intensity are converted by each photodetector into variations in a bias applied to its respective modulator. The bias variations modulate the intensity and/or phase of near-IR light illuminating the modulators.
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Ahearn John S.
Little, Jr. John W.
Bey Dawn-Marie
Chin Gay
Epps Georgia Y.
Martin Marietta Corporation
Meise William H.
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