Analysis on the optical aberration effect on spectral resolution of coded aperture spectroscopy

Peng Hao; Mingbo Chi; Yihui Wu

doi:10.1117/12.2282038

24 October 2017 Analysis on the optical aberration effect on spectral resolution of coded aperture spectroscopy

Peng Hao, Mingbo Chi, Yihui Wu

Proceedings Volume 10461, AOPC 2017: Optical Spectroscopy and Imaging; 104610B (2017) https://doi.org/10.1117/12.2282038
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

The coded aperture spectrometer can achieve high throughput and high spectral resolution by replacing the traditional single slit with two-dimensional array slits manufactured by MEMS technology. However, the sampling accuracy of coding spectrum image will be distorted due to the existence of system aberrations, machining error, fixing errors and so on, resulting in the declined spectral resolution. The influence factor of the spectral resolution come from the decode error, the spectral resolution of each column, and the column spectrum offset correction. For the Czerny-Turner spectrometer, the spectral resolution of each column most depend on the astigmatism, in this coded aperture spectroscopy, the uncorrected astigmatism does result in degraded performance. Some methods must be used to reduce or remove the limiting astigmatism. The curvature of field and the spectral curvature can be result in the spectrum revision errors.

Citation Download Citation

Peng Hao, Mingbo Chi, and Yihui Wu "Analysis on the optical aberration effect on spectral resolution of coded aperture spectroscopy", Proc. SPIE 10461, AOPC 2017: Optical Spectroscopy and Imaging, 104610B (24 October 2017); https://doi.org/10.1117/12.2282038

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