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Proceedings Paper

Long wave infrared tunable filter based on guided mode resonant effect
Author(s): Mark S. Mirotznik; Neelam Gupta; Morgan McElhiney; Victoria Carey
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Paper Abstract

We describe here a tunable long wave infrared (LWIR) band filter based on the guided mode resonant filter (GMRF) effect. The device consists of a subwavelength dielectric grating sandwiched between planar layers of contrasting dielectric materials. Using a rigorous electromagnetic design and analysis method we demonstrate how a strong narrow band reflectance can be induced. Moreover, the resonant wavelength can be easily tuned over the entire 8-12 micron band by mechanically tilting the device with respect to the optical axis. Simulation and experimental results are presented demonstrating the effectiveness of the device.

Paper Details

Date Published: 12 May 2016
PDF: 7 pages
Proc. SPIE 9855, Next-Generation Spectroscopic Technologies IX, 98550L (12 May 2016); doi: 10.1117/12.2229484
Show Author Affiliations
Mark S. Mirotznik, Univ. of Delaware (United States)
Neelam Gupta, U.S. Army Research Lab. (United States)
Morgan McElhiney, Univ. of Delaware (United States)
Victoria Carey, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 9855:
Next-Generation Spectroscopic Technologies IX
Mark A. Druy; Richard A. Crocombe, Editor(s)

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