In this contribution we present a broadband static Fourier transform spectrometer (bsFTS) based on a singlemirrorinterferometer containing only o-the-shelf optical components and an uncooled microbolometer detectorarray. The system uses concave mirrors instead of lenses and therefore covers a wide spectral range from 3:6 μmto 17 μm at a spectral resolution of 12 cm1. Furthermore, dispersion eects can be minimized and the systemcan thus be designed with increased temperature stability. We demonstrate the optical and mechanical design ofthe current laboratory prototype and compare the instrument to a scanning Fourier transform infrared (FTIR)spectrometer. Additionally, we present a technique for simultaneously acquiring the sample spectrum and thebackground spectrum. Thereby, a variation of the background over time can be compensated continuously andhence the bsFTS presented in this contribution oers significant potential with regard to long-term stability.
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