光谱学与光谱分析 |
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Optical Design of High-Resolution Echelle-Prism Cross-Dispersion |
ZHANG Yin-xin1, YANG Huai-dong2, DENG Chao1, HUANG Zhan-hua1, JIN Guo-fan2 |
1. College of Precision Instrument and Opte-Electronics Engineering, Key Laboratory of Opto-electronics Information Technology(Tianjin University)of the Ministry of Education, Tianjin 300072, China 2. State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China |
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Abstract Aiming at the wide-spectrum high-resolution echelle spectrometer, the dispersion characteristic of the echelle grating and the cross-dispersion principle is discussed. And an optical design method of resolution preferential echelle-prism cross-dispersion is described, including the design of high-resolution main dispersion, the auxiliary dispersion for the separation on the overlapped orders, and the main-auxiliary dispersion calibration and revision. According to the requirements of commercial spectrometer, a design example is reported. The simulation and the experiment results show that when the spectral span is 400~900 nm, the resolution for Hg 546 nm is 51 000, and that for Na 589 nm is 44 000.
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Received: 2012-09-19
Accepted: 2012-12-12
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Corresponding Authors:
ZHANG Yin-xin
E-mail: yinxin@tju.edu.cn
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