Optical correlation using a phase-only liquid-crystal-over-silicon spatial light modulator

Duncan J. Potter; Michael J. Ranshaw; Adil O. Al-Chalabi; Norman E. Fancey; Richard M. Sillitto; David G. Vass

doi:10.1117/12.49725

1 November 1991 Optical correlation using a phase-only liquid-crystal-over-silicon spatial light modulator

Duncan J. Potter, Michael J. Ranshaw, Adil O. Al-Chalabi, Norman E. Fancey, Richard M. Sillitto, David G. Vass

Proceedings Volume 1564, Optical Information Processing Systems and Architectures III; (1991) https://doi.org/10.1117/12.49725
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The construction and principle of operation of a liquid-crystal-over an MOS- array spatial light modulator (SLM) is described. Photographs are presented of patterns produced by amplitude-only modulation of monochromatic light by the SLM when used in a coherently illuminated imaging system. Optical Fourier transforms of phase patterns, which reveal the phase variations, are included. The use of the 16 X 16 pixel array as a pure-phase filter is discussed, and the results of correlation experiments are presented.

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Duncan J. Potter, Michael J. Ranshaw, Adil O. Al-Chalabi, Norman E. Fancey, Richard M. Sillitto, and David G. Vass "Optical correlation using a phase-only liquid-crystal-over-silicon spatial light modulator", Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); https://doi.org/10.1117/12.49725

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