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