Accurate Wavelength Calibration Method for Flat-Field Grating Spectrometers

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Abstract:

A portable spectrometer prototype is built to study wavelength calibration for flat-field grating spectrometers. An accurate calibration method called parameter fitting is presented. Both optical and structural parameters of the spectrometer are included in the wavelength calibration model, which accurately describes the relationship between wavelength and pixel position. Along with higher calibration accuracy, the proposed calibration method can provide information about errors in the installation of the optical components, which will be helpful for spectrometer alignment.

Keywords: FLAT-FIELD SPECTROMETERS; PARAMETER FITTING; SPECTROMETER ALIGNMENT; SPHERICAL VARIED LINE SPACE GRATINGS; WAVELENGTH CALIBRATION

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/11-06280

Affiliations: 1: University of Science and Technology of China, Hefei, Anhui 230029, P. R. China 2: School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, P. R. China 3: University of Science and Technology of China, Hefei, Anhui 230029, P. R. China;, Email: qiuping@ustc.edu.cn

Publication date: September 1, 2011

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