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Optical Engineering

Binary phase modulation using electrically addressed transmissive and silicon backplane spatial light modulators
Author(s): Clarence Augustine T.H. Tee; William A. Crossland; Tim D. Wilkinson; Anthony B. Davey
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Paper Abstract

The operation and performance of a 128-by-128 matrix electrically addressed ferroelectric liquid crystal (FLC) multiplexed transmissive spatial light modulator (SLM) and a 320-by-240 reflective silicon- backplane SLM are described. The two-dimensional multiplexed FLC SLM is probably the only device that exists to date optimized for ? = 1.55-?m operation. The spatial and temporal measurements of the binary phase modulation of the two devices are discussed. For the spatial measurements, a novel idea regarding the effects of the LC modulation characteristics in the interpixel deadspace of the silicon backplane on the quality of the binary phase modulation is described. For the temporal measurements, two addressing schemes for holographic beamsteering applications are described and compared experimentally with the silicon-backplane SLM. The limitation in performance for these two devices is briefly stated, and an indication given of future devices that will be possible using this rapidly advancing technology.

Paper Details

Date Published: 1 September 2000
PDF: 8 pages
Opt. Eng. 39(9) doi: 10.1117/1.1287395
Published in: Optical Engineering Volume 39, Issue 9
Show Author Affiliations
Clarence Augustine T.H. Tee, Univ. of Cambridge (United Kingdom)
William A. Crossland, Univ. of Cambridge (United Kingdom)
Tim D. Wilkinson, Univ. of Cambridge (United Kingdom)
Anthony B. Davey, Univ. of Cambridge (United Kingdom)


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