光谱学与光谱分析 |
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Data Processing for Interferogram of Spatial Heterodyne Spectrometer |
YE Song1,3,XIONG Wei2,QIAO Yan-li2,HONG Jin2,FANG Yong-hua2 |
1. Institute of Digital Technology, AISINO Corporation, Beijing 100097, China 2. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China 3. University of Science and Technology of China, Hefei 230027, China |
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Abstract Spatial heterodyne spectroscopy (SHS) is a new spectroscopic technique which can achieve high spectral resolution. The basic concepts of spatial heterodyne spectrometer was described. A method of data processing for interferogram of spatial heterodyne spectrometer was presented based on its characteristics. First order difference was performed for eliminating the baseline of interferogram. The triangular function was chosen as apodization function. The process of phase correction for Fourier transform spectrum is described. The wavelength calibration curve of SHS experimental system was obtained by measuring sodium light double line and mercury light double line. The spectral inversion accuracy of spatial heterodyne spectrometer can be effectively improved by use of this method.
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Received: 2007-11-25
Accepted: 2008-02-26
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Corresponding Authors:
YE Song
E-mail: yesongmail@sina.com
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