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Proceedings Paper

A fast electrically controlled large aperture laser beam attenuator
Author(s): James Foshee; Suning Tang; Yuanji Tang; X. Wang
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Paper Abstract

We report a large aperture laser beam attenuator by using electrically switchable gratings. This attenuator separates an incident beam into the transmitted and diffracted beams. The light intensities of both transmitted and diffracted beams can be adjusted through electro-optical effect. By carefully selecting the liquid crystals and polymer materials, we obtained a 25 dB dynamic range of attenuation with a 0.5 dB insertion loss and response time about 200 μs.

Paper Details

Date Published: 23 February 2006
PDF: 8 pages
Proc. SPIE 6117, Organic Photonic Materials and Devices VIII, 61170B (23 February 2006); doi: 10.1117/12.644830
Show Author Affiliations
James Foshee, Air Force Research Lab. (United States)
Suning Tang, Crystal Research, Inc. (United States)
Yuanji Tang, Crystal Research, Inc. (United States)
X. Wang, Crystal Research, Inc. (United States)


Published in SPIE Proceedings Vol. 6117:
Organic Photonic Materials and Devices VIII
James G. Grote; Francois Kajzar; Nakjoong Kim, Editor(s)

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