Abstract

Ferroelectric liquid-crystal spatial light modulators (FLC SLM’s) are binary modulating devices that can be used for flexible beam steering in the microsecond range. Because they are binary, at least 60% of the light power is lost to unwanted diffraction orders, however. We suggest the use of a second FLC SLM, synchronously operating in amplitude-modulating mode, to block the unwanted orders. The proposed beam-steering method is demonstrated in a simple scanner experiment. The efficiency of the suggested beam steerer is independent of the number of steering directions.

© 1998 Optical Society of America

Beam steering experiment with two cascaded ferroelectric liquid-crystal spatial light modulators

David Engström, Sverker Hård, Per Rudquist, Koen D’havé, Tomasz Matuszczyk, Marek Škereň, and Björn Löfving
Appl. Opt. 43(7) 1559-1569 (2004)

Quantized complex ferroelectric liquid crystal spatial light modulators

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Adaptive beam steering implemented in a ferroelectric liquid-crystal spatial-light-modulator free-space, fiber-optic switch

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Appl. Opt. 41(23) 4904-4911 (2002)

Fast beam steering with a ferroelectric-liquid-crystal optical phased array

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Efficient multibeam large-angle nonmechanical laser beam steering from computer-generated holograms rendered on a liquid crystal spatial light modulator

James R. Lindle, Abbie T. Watnik, and Vincent A. Cassella
Appl. Opt. 55(16) 4336-4341 (2016)