24 October 2017 Stray light and bandwidth corrections for commercial CCD array spectrometers
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Proceedings Volume 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation; 104631L (2017) https://doi.org/10.1117/12.2285638
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
CCD based array spectrometers are widely applied in remote sensing, earth observation, and other industries. However, the signals of ultraviolet region are very weak. Thus, the stray light is one of the most important factors on accurate measurements. In this work, the in-range stray light of commercial UV/VIS CCD array spectrometer and VIS/NIR CCD spectrometer were corrected by mathematical correction method. The measured stray light value at any pixel is of the order of 10−3 ~10−5 of the true in-range. A reduction of the stray light effect by 1-2 orders of magnitude can be achieved using a correction matrix based on line-spread functions (LSFs), which can be determined with the help of spectrally tunable lasers. On the other hand, the bandwidth of the commercial CCD array spectrometer was corrected due to the increasing needs for high accurate calibration and measurement of spectral radiometry. The correction outcome is in good agreement with the measured results by monochromator spectroradiometer.
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Ling Li, Ling Li, Caihong Dai, Caihong Dai, Zhifeng Wu, Zhifeng Wu, Yanfei Wang, Yanfei Wang, } "Stray light and bandwidth corrections for commercial CCD array spectrometers", Proc. SPIE 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation, 104631L (24 October 2017); doi: 10.1117/12.2285638; https://doi.org/10.1117/12.2285638
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