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Proceedings Paper

256 x 256 ferroelectric liquid crystal spatial light modulator
Author(s): David B. Banas; Mark A. Handschy; Charles M. Crandall
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Paper 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.

Paper Details

Date Published: 11 April 1997
PDF: 11 pages
Proc. SPIE 3015, Liquid Crystal Materials, Devices, and Applications V, (11 April 1997); doi: 10.1117/12.271386
Show Author Affiliations
David B. Banas, Displaytech, Inc. (United States)
Mark A. Handschy, Displaytech, Inc. (United States)
Charles M. Crandall, Displaytech, Inc. (United States)

Published in SPIE Proceedings Vol. 3015:
Liquid Crystal Materials, Devices, and Applications V
Ranganathan Shashidhar, Editor(s)

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