Operating characteristics of pixelated gray-scale optically addressed spatial light modulators incorporating the twisted smectic-C* liquid crystal effect

Louis W. K. Yim; Anthony B. Davey; Adrian R. L. Travis

doi:10.1117/1.601733

1 August 1998 Operating characteristics of pixelated gray-scale optically addressed spatial light modulators incorporating the twisted smectic-C* liquid crystal effect

Louis W. K. Yim, Anthony B. Davey, Adrian R. L. Travis

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Optical Engineering, Vol. 37, Issue 8, (August 1998). https://doi.org/10.1117/1.601733

An optically addressed spatial light modulator using the twisted smectic-C* liquid crystal effect in the light-modulating layer and an intrinsic hydrogenated amorphous silicon in the photosensitive layer is fabricated. The device incorporates a layer of pixelated aluminum mirrors, sandwiched between photosensitive and modulating layers, to increase the reflectivity of the modulated output read beam. The device is capable of achieving an intrinsic gray-scale optical output. A spatial resolution of 27 lp/mm (i.e., 54 lines/mm) at 50% modulation depth driving at 2.0 kHz and a maximum frame rate of 2.5 kHz at 80% modulation depth for which a frame cycle includes erase, write, and read operations have been demonstrated. Other operating characteristics, i.e., the sensitivity and contrast ratio, are reported.

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Louis W. K. Yim, Anthony B. Davey, and Adrian R. L. Travis "Operating characteristics of pixelated gray-scale optically addressed spatial light modulators incorporating the twisted smectic-C* liquid crystal effect," Optical Engineering 37(8), (1 August 1998). https://doi.org/10.1117/1.601733

Published: 1 August 1998

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