Acta Optica Sinica, Volume. 41, Issue 22, 2212001(2021)

High-Resolution Echelle Grating Spectrometer Based on Off-Axis Three-Mirror Reflective Optical System

Zengpeng Yang1,2、*, Zhengyan Li2, Enchang Pu1, Lisong Yan2, Chenyue Wang1, Lüji Chen1, Ping Li1, Weiping Yang3, and Yang Zhang3
Author Affiliations
  • 1Kunming Institute of Physics, Kunming, Yunnan 650223, China
  • 2School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
  • 3School of Physics and Electronic Information Technology, Yunnan Normal University, Kunming, Yunnan 650500, China
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    A wide-band high-resolution echelle grating spectrometer is designed on the basis of an off-axis three-mirror reflective optical system and a multi-column linear array detector in this paper. First, the structural parameters of the echelle gratings are optimized with the instrument performance indicators as constraints so that the gratings can fold and overlap the wide working band within a small spectral order while ensuring high dispersion. The multi-column linear array detector is used for signal acquisition. Then, for the aberration correction of the wide free spectral region with high dispersion, the off-axis three-mirror reflective optical system is used as the focusing mirror and the off-axis parabolic mirror is used as the collimating mirror. The working band of the designed echelle grating spectrometer is 400--900 nm, and the F number is 4.5. The spectral resolution is 0.003, 0.004, and 0.005 nm at 402.31, 541.82, and 870.48 nm, respectively, and the system volume is 380 mm×325 mm×230 mm.

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    Zengpeng Yang, Zhengyan Li, Enchang Pu, Lisong Yan, Chenyue Wang, Lüji Chen, Ping Li, Weiping Yang, Yang Zhang. High-Resolution Echelle Grating Spectrometer Based on Off-Axis Three-Mirror Reflective Optical System[J]. Acta Optica Sinica, 2021, 41(22): 2212001

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Apr. 23, 2021

    Accepted: Jun. 3, 2021

    Published Online: Nov. 17, 2021

    The Author Email: Zengpeng Yang (175367864@qq.com)

    DOI:10.3788/AOS202141.2212001

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