论文信息 - High‐speed analog spatial light modulator using a hydrogenated amorphous silicon photosensor and an electroclinic liquid crystal

High‐speed analog spatial light modulator using a hydrogenated amorphous silicon photosensor and an electroclinic liquid crystal

A high‐speed optically addressed spatial light modulator is described which uses the electroclinic effect in chiral smectic A liquid crystals with a p‐i‐n photodiode of hydrogenated amorphous silicon (a‐Si:H). The near microsecond response time is a function of the liquid‐crystal mixture and temperature. We present and analyze optical modulation measurements of a device which exhibits a response time of 40 μs at 29 °C and 4 μs at 50 °C. The optical response is continuous and linear with electric field and write‐light intensity, allowing for grey level applications.

[1] Wojciech Kuczynski,et al. The soft-mode ferroelectric effect , 1988 .

[2] Shoichi Kurita,et al. High‐speed light valve using an amorphous silicon photosensor and ferroelectric liquid crystals , 1987 .

[3] Mark A. Handschy,et al. High-speed binary optically addressed spatial light modulator , 1989 .

[4] Uzi Efron,et al. The silicon liquid‐crystal light valve , 1985 .

[5] Neil Collings,et al. An amorphous silicon/chiral smectic spatial light modulator , 1988 .

[6] N. Clark,et al. Director and layer structure of SSFLC cells , 1988 .

[7] William A. Crossland,et al. The Novel Application Of The Electroclinic Electro-Optic Effect To Light Valve Technology , 1989, Other Conferences.

[8] N. Clark,et al. Submicrosecond bistable electro‐optic switching in liquid crystals , 1980 .

[9] John W. Goodby,et al. A reliable method of alignment for smectic liquid crystals , 1984 .

[10] G. Moddel,et al. Design And Performance Of High-Speed Optically-Addressed Spatial Light Modulators , 1988, Defense, Security, and Sensing.

[11] R. Meyer,et al. Electroclinic effect at the A-C phase change in a chiral smectic liquid crystal , 1979 .