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

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

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摘要

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 1p/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.#1998 Society of Photo-Optical Instrumentation Engineers. S0091-3286(98)03208-5 Subject terms: optically addressed spatial light modulator; twisted smectic-C liquid crystal effect; intrinsic hydrogenated amorphous silicon; gray scale; pix-elated aluminum mirrors. Paper 38047 received Apr. 30, 1997; revised manuscript received Oct. 20, 1997, and Jan. 29, 1998; accepted for publication Feb. 27, t 998.

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《Optical Engineering》 |1998年第9期|2387-2394|共8页
作者
Louis w. K. Yim; Anthony B Davey; Adrian R. L. Travis;
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University 0f Cambridge Department of Engineering/ Trumpington Street Cambridge CB2 1PZ United Kingdom E-mail:lwky100 @ eng.cam.ac.uk;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
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正文语种英语
中图分类光学仪器;
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Operating characteristics of pixelated gray-scale optically addressed spatial light modulators incorporating the twisted smectic-C ↑(*) liquid crystal effect

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