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Proceedings Paper

Real-time optical correlator using photorefractive GaAs
Author(s): Duncan Tsuen-Hsi Liu; Li-Jen Cheng; Tien-Hsin Chao; Jeffrey W. Yu; Don A. Gregory
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Paper Abstract

A real-time optical correlator based on GaAs and liquid-crystal TV (LCTV) is demonstrated. The demonstrated system has a video-frame rate limited by the speed of the LCTVs; if faster spatial-light modulators are used, the potential frame rate of a GaAs-based correlator can be as fast as 1000 frames/sec under experimental conditions. Comparisons are made between VanderLugt and joint transform and between degenerate and nondegenerate four-wave mixing. The edge-enhancement effect and the Bragg diffraction effect are discussed.

Paper Details

Date Published: 27 December 1990
PDF: 13 pages
Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23405
Show Author Affiliations
Duncan Tsuen-Hsi Liu, Jet Propulsion Lab. (United States)
Li-Jen Cheng, Jet Propulsion Lab. (United States)
Tien-Hsin Chao, Jet Propulsion Lab. (United States)
Jeffrey W. Yu, Jet Propulsion Lab. (United States)
Don A. Gregory, U.S. Army Missile Command (United States)


Published in SPIE Proceedings Vol. 1347:
Optical Information Processing Systems and Architectures II
Bahram Javidi, Editor(s)

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