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Angular acceptance analysis of an infrared focal plane array with a built-in stationary Fourier transform spectrometer

Abstract : Stationary Fourier transform spectrometry is an interesting concept for building reliable field or embedded spectroradiometers, especially for the mid- and far- IR. Here, a very compact configuration of a cryogenic stationary Fourier transform IR (FTIR) spectrometer is investigated, where the interferometer is directly integrated in the focal plane array (FPA). We present a theoretical analysis to explain and describe the fringe formation inside the FTIR-FPA structure when illuminated by an extended source positioned at a finite distance from the detection plane. The results are then exploited to propose a simple front lens design compatible with a handheld package.
Keywords : Spectrometers Infrared
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Submitted on : Friday, May 25, 2012 - 2:34:37 PM
Last modification on : Wednesday, October 14, 2020 - 4:08:14 AM
Long-term archiving on: : Friday, November 30, 2012 - 12:20:47 PM

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Frédéric Gillard, Yann Ferrec, Nicolas Guérineau, Sylvain Rommeluère, Jean Taboury, et al.. Angular acceptance analysis of an infrared focal plane array with a built-in stationary Fourier transform spectrometer. Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2012, 29 (6), pp.936--944. ⟨10.1364/JOSAA.29.000936⟩. ⟨hal-00700191⟩

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