16 November 2000 Optimum design of a flat-field microspectrometer
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In this paper a flat-field micro-spectrometer is designed by using varied-pitch gratings. The geometrical parameters which affect the focal curve, i.e. the radius of curvature, pitch variation, incidence angle, and the position of the focal plane, are analyzed. Then a planar concave grating is optimized by the Simulated Annealing Algorithm. The spectral region covers 400 - 800 nm and the linear dispersion is about 6 micrometers /nm. The obtained linearity of the focal curve is better than 98%. Furthermore, to get better aberration, the concave grating with arbitrary grating profile is also discussed.
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Daoyi Wang, Daoyi Wang, Yingbai Yan, Yingbai Yan, Guofan Jin, Guofan Jin, Minxian Wu, Minxian Wu, Qingsheng He, Qingsheng He, } "Optimum design of a flat-field microspectrometer", Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); doi: 10.1117/12.406534; https://doi.org/10.1117/12.406534


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