Liquid Crystal Infrared Modulation
- 30 January 1980
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 0202, 82-89
- https://doi.org/10.1117/12.958102
Abstract
Experimental liquid crystal 8-12μm 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 8-12μm 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.Keywords
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