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Proceedings Paper

A Submicron Metal Grid Mirror Liquid Crystal Light Valve For Optical Processing Applications
Author(s): U. Efron; A. Au; C. S. Bak; N. W. Goodwin; P. G. Reif; H. L. Garvin; W. Byles; Y. Owechko; M. S. Welkowsky
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Paper Abstract

A submicron metal grid mirror was incorporated into the structure of a silicon liquid light valve. In our experiment, a 0.5 μm-period, aluminum wire grid mirror was used in conjunction with a 90°-twisted nematic configuration. A sharp threshold with a peak-to-threshold ratio of 3:1 was experimentally observed. The threshold intensity level was tunable from 2.5 μW/cm2 to 50 μW/cm2 by changing the bias voltage from about 5 to 25 volts. These properties allow the polarization-sensitive mirror-based LCLV to be used as a non-linear SLM with applications in optical computing (bistable device) and adaptive image thresholding. The device can also be used as an interfacing device for an optical co-processor as well as for optical implementation of Hopfield-Anderson association and phase conjugation.

Paper Details

Date Published: 5 February 1990
PDF: 16 pages
Proc. SPIE 1151, Optical Information Processing Systems and Architectures, (5 February 1990); doi: 10.1117/12.962259
Show Author Affiliations
U. Efron, Hughes Research Laboratories (United States)
A. Au, Hughes Research Laboratories (United States)
C. S. Bak, Hughes Research Laboratories (United States)
N. W. Goodwin, Hughes Research Laboratories (United States)
P. G. Reif, Hughes Research Laboratories (United States)
H. L. Garvin, Hughes Research Laboratories (United States)
W. Byles, Hughes Research Laboratories (United States)
Y. Owechko, Hughes Research Laboratories (United States)
M. S. Welkowsky, Hughes Research Laboratories (United States)


Published in SPIE Proceedings Vol. 1151:
Optical Information Processing Systems and Architectures
Bahram Javidi, Editor(s)

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