256 x 256 ferroelectric liquid crystal spatial light modulator

David B. Banas; Mark A. Handschy; Charles M. Crandall

doi:10.1117/12.271386

11 April 1997 256 x 256 ferroelectric liquid crystal spatial light modulator

David B. Banas, Mark A. Handschy, Charles M. Crandall

Proceedings Volume 3015, Liquid Crystal Materials, Devices, and Applications V; (1997) https://doi.org/10.1117/12.271386
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

We present a binary reflective spatial light modulator (SLM) constructed using a patented ferroelectric liquid crystal (FLC) technique. The device is built atop a planarized 0.6 micrometer CMOS SRAM backplane with 15 micrometer pixel pitch and 88% fill factor. The device achieves better than 25% optical throughput when used with collimated laser light and better than 100:1 contrast when oriented for amplitude modulation. When oriented for phase modulation, the device achieves 180 degrees of phase shift between its 2 states. The device can be operated as fast as 5 kHz with complete switching of the liquid crystal. Applications in the fields of optical computing and optical information processing are suggested.

Citation Download Citation

David B. Banas, Mark A. Handschy, and Charles M. Crandall "256 x 256 ferroelectric liquid crystal spatial light modulator", Proc. SPIE 3015, Liquid Crystal Materials, Devices, and Applications V, (11 April 1997); https://doi.org/10.1117/12.271386

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