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Proceedings Paper

Optimum design of a flat-field microspectrometer
Author(s): Daoyi Wang; Yingbai Yan; Guofan Jin; Minxian Wu; Qingsheng He
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Paper Abstract

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.

Paper Details

Date Published: 16 November 2000
PDF: 6 pages
Proc. SPIE 4131, Infrared Spaceborne Remote Sensing VIII, (16 November 2000); doi: 10.1117/12.406534
Show Author Affiliations
Daoyi Wang, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Minxian Wu, Tsinghua Univ. (China)
Qingsheng He, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 4131:
Infrared Spaceborne Remote Sensing VIII
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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