Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve For Real Time Data Input

B. Loiseaux; L. Pichon; G. Illiaquer; J. P. Huignard

doi:10.1117/12.934409

16 June 1983 Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve For Real Time Data Input

B. Loiseaux, L. Pichon, G. Illiaquer, J. P. Huignard

Author Affiliations +

Proceedings Volume 0369, Max Born Centenary Conf; (1983) https://doi.org/10.1117/12.934409
Event: The Max Born Centenary Conference, 1982, Edinburgh, United Kingdom

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.

Citation Download Citation

B. Loiseaux, B. Loiseaux, L. Pichon, L. Pichon, G. Illiaquer, G. Illiaquer, J. P. Huignard, J. P. Huignard, "Dynamic Optical Cross-Correlator Using A Liquid Crystal Light Valve For Real Time Data Input", Proc. SPIE 0369, Max Born Centenary Conf, (16 June 1983); doi: 10.1117/12.934409; https://doi.org/10.1117/12.934409

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