Fast beam steering with a ferroelectric-liquid-crystal optical phased array.
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.
Engström
David
D
Displaytech, Inc., Longmont, Colorado 80503, USA.
O'Callaghan
Michael J
MJ
Walker
Chris
C
Handschy
Mark A
MA