A novel method to improve spectral detection capability of imaging spectrometers

ZENG Yan; ZENG Yan'an; ZHANG Nanyangsheng; ZHAO Yu; LONG Jianming

doi:10.7510/jgjs.issn.1001-3806.2018.02.011

LASER TECHNOLOGY > 2018 > 42(2): 196-200. > DOI: 10.7510/jgjs.issn.1001-3806.2018.02.011

ZENG Yan, ZENG Yan'an, ZHANG Nanyangsheng, ZHAO Yu, LONG Jianming. A novel method to improve spectral detection capability of imaging spectrometers[J]. LASER TECHNOLOGY, 2018, 42(2): 196-200. DOI: 10.7510/jgjs.issn.1001-3806.2018.02.011

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A novel method to improve spectral detection capability of imaging spectrometers

School of Optics and Electronics Information, Huazhong University of Science and Technology, Wuhan 430074, China

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Received Date: March 29, 2017
Revised Date: May 16, 2017
Published Date: March 24, 2018

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Abstract

In order to improve spectral resolution of an imaging spectrometer without changing its hardware structure, a novel method of spectral refinement was adopted. An imaging spectrometer with liquid crystal tunable filter was used to obtain the approximate spectral data of the incident light for theoretical analysis and experimental verification. In three sets of numerical simulation data, the standard deviations of the spectral intensity difference between the approximate spectra and the true spectral were reduced by 79.3%, 68.3% and 58.8%, compared with the spectra measured with an imaging spectrometer. In two sets of experiment data, the standard deviations were decreased by 84.4% and 60.7%. The results show that the approximation degree between the approximate spectrum and the real spectrum of the incident light is improved and the spectral peaks are separated very well. It is helpful to improve the spectral detection capability of imaging spectrometers.
- spectroscopy,
- spectral resolution,
- optimization method,
- imaging spectrometer

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