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

Oleg P. Pishnyak; Andrii B. Golovin; Liubov Kreminska; John J. Pouch; Félix A. Miranda; Bruce K. Winker; Oleg D. Lavrentovich

doi:10.1117/1.2192520

1 April 2006 Smectic-A-filled birefringent elements and fast switching twisted dual-frequency nematic cells used for digital light deflection

Oleg P. Pishnyak, Andrii B. Golovin, Liubov Kreminska, John J. Pouch, Félix A. Miranda, Bruce K. Winker, Oleg D. Lavrentovich

Author Affiliations +

Optical Engineering, Vol. 45, Issue 4, 044002 (April 2006). https://doi.org/10.1117/1.2192520

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.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Oleg P. Pishnyak, Andrii B. Golovin, Liubov Kreminska, John J. Pouch, Félix A. Miranda, Bruce K. Winker, and Oleg D. Lavrentovich "Smectic-A-filled birefringent elements and fast switching twisted dual-frequency nematic cells used for digital light deflection," Optical Engineering 45(4), 044002 (1 April 2006). https://doi.org/10.1117/1.2192520

Published: 1 April 2006

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KEYWORDS

Shape memory alloys

Prisms

Liquid crystals

Polarization

Magnetism

Molecules

Optical components

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