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Real-time optical correlator using computer-generated holographic filter on a liquid crystal light valveLimitations associated with the binary phase-only filter often used in optical correlators are presently circumvented in the writing of complex-valued data on a gray-scale spatial light modulator through the use of a computer-generated hologram (CGH) algorithm. The CGH encodes complex-valued data into nonnegative real CGH data in such a way that it may be encoded in any of the available gray-scale spatial light modulators. A CdS liquid-crystal light valve is used for the complex-valued CGH encoding; computer simulations and experimental results are compared, and the use of such a CGH filter as the synapse hologram in a holographic optical neural net is discussed.
Document ID
19920043943
Document Type
Conference Paper
Authors
Chao, Tien-Hsin (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yu, Jeffrey (JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
OPTICS
Meeting Information
Optical Information-Processing Systems and Architectures II(San Diego, CA)
Distribution Limits
Public
Copyright
Other