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Proceedings Paper

A Liquid Crystal Tunable Spectral Filter: Visible And Infrared Operation
Author(s): W. Gunning; J. Pasko; J. Tracy
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Paper 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.

Paper Details

Date Published: 21 July 1981
PDF: 5 pages
Proc. SPIE 0268, Imaging Spectroscopy I, (21 July 1981); doi: 10.1117/12.959943
Show Author Affiliations
W. Gunning, Rockwell International Science Center (United States)
J. Pasko, Rockwell International Science Center (United States)
J. Tracy, Rockwell International Science Center (United States)


Published in SPIE Proceedings Vol. 0268:
Imaging Spectroscopy I
David D. Norris, Editor(s)

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