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. 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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