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Acta Optica Sinica, Volume. 45, Issue 2, 0222002(2025)

Large-Field High-Resolution Smile Distortion Correction Method for P+G+P Spectrometers

Qiang Zheng1,2,3,4, Yuquan Zheng1,3,4、*, Chao Lin1,3,4, and Jialun Zhang1,3,4
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, Jilin , China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3State Key Laboratory of Applied Optics, Changchun 130033, Jilin , China
  • 4Key Laboratory of Advanced Manufacturing for Optical Systems, Chinese Academy of Sciences, Changchun 130033, Jilin , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (16)
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    References (17)
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    Figures & Tables(16)
    Sketch of P+G+P spectrometer optical structure

    Fig. 1. Sketch of P+G+P spectrometer optical structure

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    Sketch of smile distortion

    Fig. 2. Sketch of smile distortion

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    Schematic diagram of ideal grating spectrometer system optical structure

    Fig. 3. Schematic diagram of ideal grating spectrometer system optical structure

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    Smile of ideal grating spectrometer

    Fig. 4. Smile of ideal grating spectrometer

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    Sketch of main light path through P+G+P dispersion model. (a) Meridian section; (b) sagittal section

    Fig. 5. Sketch of main light path through P+G+P dispersion model. (a) Meridian section; (b) sagittal section

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    Diffraction of transmission plane grating

    Fig. 6. Diffraction of transmission plane grating

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    Sketch of prism angle magnification

    Fig. 7. Sketch of prism angle magnification

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    Flow chart of automatic solution of smile correcting P+G+P structure

    Fig. 8. Flow chart of automatic solution of smile correcting P+G+P structure

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    Schematic diagram of large-field high-resolution smile correcting P+G+P spectrometer system optical structure

    Fig. 9. Schematic diagram of large-field high-resolution smile correcting P+G+P spectrometer system optical structure

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    MTF of system at central wavelength

    Fig. 10. MTF of system at central wavelength

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    RMS spot radius with wavelengths

    Fig. 11. RMS spot radius with wavelengths

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    Full-band spectral resolution of system

    Fig. 12. Full-band spectral resolution of system

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    Smile distortion of system

    Fig. 13. Smile distortion of system

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    Keystone distortion of system

    Fig. 14. Keystone distortion of system

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    • Table 1. Specifications of large-field high-resolution smile correcting P+G+P spectrometer for greenhouse gas detection

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      Table 1. Specifications of large-field high-resolution smile correcting P+G+P spectrometer for greenhouse gas detection

      IndexValue
      Spectral region /nm747‒777
      FOV （field of view） /（°）22
      F number1.6
      Silt size /（mm×μm）60×20
      Spectral resolution /nm0.04
      Angular magnification1.5
      Angular dispersion /（rad/nm）3.33×10－3
      Pixel size /（μm×μm）40×20

    • Table 2. Alignment tolerances of the P+G+P dispersion module

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      Table 2. Alignment tolerances of the P+G+P dispersion module

      IndexValue
      Decenter in x and y /mm0.01
      Tilt in x and y /（°）0.0167
      Test wavelength /nm762
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    Qiang Zheng, Yuquan Zheng, Chao Lin, Jialun Zhang. Large-Field High-Resolution Smile Distortion Correction Method for P+G+P Spectrometers[J]. Acta Optica Sinica, 2025, 45(2): 0222002

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    Paper Information

    Category: Optical Design and Fabrication

    Received: Sep. 26, 2024

    Accepted: Oct. 23, 2024

    Published Online: Jan. 20, 2025

    The Author Email: Zheng Yuquan (zhengyq@sklao.ac.cn)

    DOI:10.3788/AOS241597

    CSTR:32393.14.AOS241597

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology