紫外双光栅光谱仪结构设计与波长精度分析

曹佃生; 林冠宇; 杨小虎; 张子辉; 闻宝朋

doi:10.3788/CO.20181102.0219

Volume 11 Issue 2

Apr. 2018

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Article Contents

Chinese Optics > 2018 > 11(2): 219-230.

CAO Dian-sheng, LIN Guan-yu, YANG Xiao-hu, ZHANG Zi-hui, WEN Bao-peng. Structure design and wavelength accuracy analysis of ultraviolet double grating spectrometer[J]. Chinese Optics, 2018, 11(2): 219-230. doi: 10.3788/CO.20181102.0219

Citation:

CAO Dian-sheng, LIN Guan-yu, YANG Xiao-hu, ZHANG Zi-hui, WEN Bao-peng. Structure design and wavelength accuracy analysis of ultraviolet double grating spectrometer[J]. Chinese Optics, 2018, 11(2): 219-230. doi: 10.3788/CO.20181102.0219

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Structure design and wavelength accuracy analysis of ultraviolet double grating spectrometer

doi: 10.3788/CO.20181102.0219

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
FAW Car Co., Ltd, Changchun 130000, China

Funds:

Major Scientific Instruments & Equipment Special Project of National Natural Science Foundation of China 41527806

More Information

Author Bio:
CAO Dian-sheng(1987—), male, born in Rizhao, Shandong, doctor, research assistant. He was received a B.S. degree from Jilin University in 2007 and a doctor′s degree from Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, and is engaged mainly in the research on the optical-mechanical structure design of space optics remote sensing instruments. E-mail:caodiansheng1987@163.com
Corresponding author: CAO Dian-sheng, E-mail:caodiansheng1987@163.com
Received Date: 11 Nov 2017
Rev Recd Date: 13 Jan 2018
Publish Date: 01 Apr 2018

Abstract

Abstract

In order to observe the solar spectrum between 170 nm to 380 nm precisely, an ultraviolet double grating spectrometer with its wavelength repeatability accuracy better than ±0.02 nm has been designed. A wavelength scanning mechanism is the key module of the ultraviolet double grating spectrometer. Mechanical parameters are derived from optical parameters according to the grating dispersion principle. Error sources which influence the spectrometer wavelength repeatability error have been analyzed. According to the analysis results, the repeatability error of the lead screw is the main error source. A wavelength scanning mechanism has been assembled with a ±2 μm accuracy lead screw, and the spectrometer mechanism structure has been designed. Experiments have been carried out with a mercury lamp as light source to verify wavelength repeatability. The experiment results show that the wavelength repeatability of the spectrometer is between -0.005 nm and +0.007 nm, which is better than the required accuracy of ±0.02 nm.
- double grating spectrometer,
- wavelength scanning mechanism,
- wavelength repeatability,
- concave grating,
- error analysis

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References(15)

References

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