Affiliation:
1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2. Daheng College, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract
The stepped micro-mirror imaging Fourier transform spectrometer (SIFTS) has the advantages of high throughput, compactness, and stability. However, the systematic errors in the interference core of the SIFTS have a significant impact on the interferogram and the reconstructed spectrum. In order to reduce the influence of systematic errors, a transfer error model of the systematic errors in the interference core of the SIFTS is established, and an interferogram and spectrum calibration method is presented, which combines the least squares fitting calibration and the row-by-row fast Fourier transform-inverse fast Fourier transform (FFT-IFFT) flat-field calibration. The experimental results show that the methods can sufficiently reduce the influence of systematic errors in the interference core of the SIFTS, such as the interferogram fringe tilt, the peak position shift of the reconstructed spectrum, and the error of spectral response.
Funder
National Key R&D Program of China
National Natural Science Foundation of China
Jilin Scientific and Technological Development Program
Youth Innovation Promotion Association Foundation of the Chinese Academy of Sciences
National Science and Technology Major Project
Subject
General Earth and Planetary Sciences
Cited by
3 articles.
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