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Optical Engineering

Smectic-A-filled birefringent elements and fast switching twisted dual-frequency nematic cells used for digital light deflection
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Paper Abstract

We describe the application of smectic A (SmA) liquid crystals for beam deflection. SmA materials can be used in digital beam deflectors (DBDs) as fillers for passive birefringent prisms. SmA prisms have high birefringence and can be constructed in a variety of shapes, including single prisms and prismatic blazed gratings of different angles and profiles. We address the challenges of uniform alignment of SmA, such as elimination of focal conic domains. Fast rotation of the incident light polarization in DBDs is achieved by an electrically switched 90-deg twisted nematic (TN) cell.

Paper Details

Date Published: 1 April 2006
PDF: 9 pages
Opt. Eng. 45(4) 044002 doi: 10.1117/1.2192520
Published in: Optical Engineering Volume 45, Issue 4
Show Author Affiliations
Oleg P. Pishnyak, Kent State Univ. (United States)
Andrii B. Golovin, Kent State Univ. (United States)
Liubov Kreminska, Kent State Univ. (United States)
John J. Pouch, NASA Glenn Research Ctr. (United States)
Félix A. Miranda, NASA Glenn Research Ctr. (United States)
Bruce K. Winker, Rockwell Scientific Co., LLC (United States)
Oleg D. Lavrentovich, Kent State Univ. (United States)

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