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18 September 2018 Acousto-optic infrared imaging spectrometer for close-up sensing of planetary surfaces
Denis A. Belyaev, Konstantin B. Yushkov, Sergey P. Anikin, Yuri S. Dobrolenskiy, Alexander Laskin, Vladimir Ya. Molchanov, Sergey A. Potanin, Oleg I. Korablev, Oleg Makarov, Sergey N. Mantsevich
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Proceedings Volume 10765, Infrared Remote Sensing and Instrumentation XXVI; 107650H (2018) https://doi.org/10.1117/12.2320487
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States
Abstract
We report design of laboratory prototype for a compact infrared acousto-optic imaging spectro-polarimeter, which may be implemented for remote or close-up analysis of planetary surfaces. The prototype concept contains a telecentric optics, apochromatic design over the bandwidth of 0.9–3.4 μm, and simultaneous imaging of two orthogonal linear polarizations of the same scene at a focal plane array (FPA). Two acousto-optic channels, the near-IR (0.9-1.7 μm) the mid-IR (1.5–3.4 μm), were developed with spectral resolution of 100 cm-1 (10 nm at 1 μm) and 25 cm-1 (20 nm at 3 μm) respectively. When imaging samples, the spatial resolution of 0.2 mm at the target distance of one meter was reached. It corresponds to 100 by 100 elements resolved at the FPA for each of the two light polarizations. This type of instruments may be considered as a potential reconnaissance and analysis tool for future planetary or moon landers and rovers to study spectral and polarization properties of the regolith.
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Denis A. Belyaev, Konstantin B. Yushkov, Sergey P. Anikin, Yuri S. Dobrolenskiy, Alexander Laskin, Vladimir Ya. Molchanov, Sergey A. Potanin, Oleg I. Korablev, Oleg Makarov, and Sergey N. Mantsevich "Acousto-optic infrared imaging spectrometer for close-up sensing of planetary surfaces", Proc. SPIE 10765, Infrared Remote Sensing and Instrumentation XXVI, 107650H (18 September 2018); https://doi.org/10.1117/12.2320487
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