1 August 1996 Electronically tunable, first-order Fabry-Perot infrared filter
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A tunable IR filter capable of scanning from 8.2 to 12.8 µm has been designed, constructed, and tested. It is a first-order Fabry- Pe´ rot interferometer with piezoelectrically driven cavity spacing. Multilayer dielectric coatings for the partially transmitting mirrors were designed to minimize the wavelength-dependent phase change produced by reflection. The transmission bandwidth ranged from 2.8 to 4.0% across the tuning range. Continuous scanning at 20 Hz rates was demonstrated.
J. Thomas Knudtson, J. Thomas Knudtson, David S. Levy, David S. Levy, Kenneth C. Herr, Kenneth C. Herr, } "Electronically tunable, first-order Fabry-Perot infrared filter," Optical Engineering 35(8), (1 August 1996). https://doi.org/10.1117/1.600806 . Submission:

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