21 July 1981 A Liquid Crystal Tunable Spectral Filter: Visible And Infrared Operation
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Proceedings Volume 0268, Imaging Spectroscopy I; (1981) https://doi.org/10.1117/12.959943
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States
Abstract
The large optical anisotropy of liquid crystal molecules is employed to realize an efficient, voltage tunable Fabry-Perot filter. Tuning has been demonstrated in both the visible and middle infrared. The small voltages required to tune over one free spectral range (FSR) result in a device having greater potential for designing filters having a larger range of FSRs, and therefore bandpass widths, than is possible for the solid electro-optic Fabry-Perot described in previous work.1 We show that for many commercially available liquid crystal materials, infrared operation is possible over wide regions where molecular absorptions do not occur.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
W. Gunning, W. Gunning, J. Pasko, J. Pasko, J. Tracy, J. Tracy, } "A Liquid Crystal Tunable Spectral Filter: Visible And Infrared Operation", Proc. SPIE 0268, Imaging Spectroscopy I, (21 July 1981); doi: 10.1117/12.959943; https://doi.org/10.1117/12.959943
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