Liquid Crystal Infrared Modulation

J. G. Pasko; J. Tracy

doi:10.1117/12.958102

30 January 1980 Liquid Crystal Infrared Modulation

J. G. Pasko, J. Tracy

Proceedings Volume 0202, Active Optical Devices; (1980) https://doi.org/10.1117/12.958102
Event: 23rd Annual Technical Symposium, 1979, San Diego, United States

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.

Citation Download Citation

J. G. Pasko and J. Tracy "Liquid Crystal Infrared Modulation", Proc. SPIE 0202, Active Optical Devices, (30 January 1980); https://doi.org/10.1117/12.958102

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