Long wave infrared tunable filter based on guided mode resonant effect

Mark S. Mirotznik; Neelam Gupta; Morgan McElhiney; Victoria Carey

doi:10.1117/12.2229484

12 May 2016 Long wave infrared tunable filter based on guided mode resonant effect

Mark S. Mirotznik, Neelam Gupta, Morgan McElhiney, Victoria Carey

Proceedings Volume 9855, Next-Generation Spectroscopic Technologies IX; 98550L (2016) https://doi.org/10.1117/12.2229484
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

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.

Citation Download Citation

Mark S. Mirotznik, Neelam Gupta, Morgan McElhiney, and Victoria Carey "Long wave infrared tunable filter based on guided mode resonant effect", Proc. SPIE 9855, Next-Generation Spectroscopic Technologies IX, 98550L (12 May 2016); https://doi.org/10.1117/12.2229484

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