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Appl Opt. 2009 Mar 20;48(9):1721-6.

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

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  • 1Displaytech, Inc., Longmont, Colorado 80503, USA.


We demonstrate fast, efficient beam steering using a single 1x32 analog ferroelectric liquid crystal (FLC) spatial light modulator. A high-tilt FLC material with 82 degrees optic-axis switching provides, in a reflective-mode device with a passive quarter-wave retarder between a half-wave FLC layer and a mirror, 91% of full 0-2pi phase modulation. Electronic drive based on applied charge gives 200 micros response-time analog modulation.

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