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

Prisms

Liquid crystals

Polarization

Magnetism

Molecules

Optical components

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