High-speed binary optically addressed spatial light modulator
- 7 August 1989
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 55 (6) , 537-539
- https://doi.org/10.1063/1.101847
Abstract
We describe the structure and operating characteristics of a high-speed optically addressed spatial light modulator (OASLM) with a hydrogenated amorphous silicon (a-Si:H) photosensor and a ferroelectric liquid-crystal modulator. The photosensor is a p-i-n photodiode, which switches the liquid crystal into one of two stable states. Under a write-light intensity of 6 mW/cm2, the OASLM exhibits a response time of 155 μs, a contrast ratio of 20:1, and a resolution of 40 lp/mm. The writing sensitivity per pixel is 0.1 pJ.Keywords
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