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

Authors
  • Engström, David
  • O'Callaghan, Michael J
  • Walker, Chris
  • Handschy, Mark A
Type
Published Article
Journal
Applied Optics
Publisher
The Optical Society
Publication Date
Mar 20, 2009
Volume
48
Issue
9
Pages
1721–1726
Identifiers
PMID: 19305470
Source
Medline
License
Unknown

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.

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