30 January 1980 Liquid Crystal Infrared Modulation
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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.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. G. Pasko, J. G. Pasko, J. Tracy, J. Tracy, } "Liquid Crystal Infrared Modulation", Proc. SPIE 0202, Active Optical Devices, (30 January 1980); doi: 10.1117/12.958102; https://doi.org/10.1117/12.958102

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