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Proceedings Paper

Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve For Real Time Data Input
Author(s): B. Loiseaux; L. Pichon; G. Illiaquer; J. P. Huignard
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Paper Abstract

Coherent optical processors have interesting potential applications for pattern recognition or optical computing. A real-time cross-correlator using the dynamic holographic properties of Bi12 Si 020 (B.S.0.) crystals will be presented. A photo-conductor liquid crystal light valve transducer allows real-time data input in the processor via incoherent to coherent light conversion. A classical two-lenses optical configuration is used to simultaneously record and read the dynamic phase-volume hologram photoinduced by the photorefractive B.S.0 crystal placed in the focal plane of the Fourier transform lens. Some specific properties of the dynamic correlator such as cycle time constant, spatial resolution, beam intensities will be reported. Experimental cross-correlation results of various types of information written on the light valve will be demonstrated.

Paper Details

Date Published: 16 June 1983
PDF: 7 pages
Proc. SPIE 0369, Max Born Centenary Conf, (16 June 1983); doi: 10.1117/12.934409
Show Author Affiliations
B. Loiseaux, Thomson-CSF (France)
L. Pichon, C.N.E.T (France)
G. Illiaquer, Thomson-CSF (France)
J. P. Huignard, Thomson-CSF (France)


Published in SPIE Proceedings Vol. 0369:
Max Born Centenary Conf
M. John Colles; D. William Swift, Editor(s)

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