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Optical Engineering

Liquid Crystal Infrared Modulation
Author(s): J. G. Pasko; J. Tracy; W. Elser
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Paper Abstract

Experimental liquid crystal 8 to 12 Am infrared modulators have been fabricated and operated utilizing the cholesteric-nematic phase change effect occurring with cyanobiphenyl liquid crystals. A one-mil-thick film of 4-cyano-4'-pentyl-biphenyl has an average transmission over the whole 8 to 12 Am region of =87%. Experiments to determine modulator response times and contrast are discussed as well as some of the basic limitations of infrared modulation using liquid crystals.

Paper Details

Date Published: 1 December 1981
PDF: 6 pages
Opt. Eng. 20(6) 206970 doi: 10.1117/12.7972844
Published in: Optical Engineering Volume 20, Issue 6
Show Author Affiliations
J. G. Pasko, Rockwell International Science Center (United States)
J. Tracy, Rockwell International Science Center (United States)
W. Elser, United States Army Night Vision and Electro-Optics Laboratories (United States)

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