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Acta Optica Sinica, Volume. 42, Issue 8, 0830001(2022)

Analysis and Correction of Nonlinear Optical Path Difference of Fourier Transform Spectrometer

Gaoping Liu1、*, Chao Qu2, and Siqi Zhang3
Author Affiliations
  • 1School of Information and Intelligent Engineering, Zhejiang Wanli University, Ningbo, Zhejiang 315100, China
  • 2Department of Information and Communication Engineering, School of Electronic and Information Engineering, Xi′an Jiaotong University, Xian, Shaanxi 710049, China
  • 3Xi′an Modern Control Technology Research Institute, Xi′an, Shaanxi 710065, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (17)
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    Figures & Tables(9)
    Fourier transform spectrometer based on Wollaston prism

    Fig. 1. Fourier transform spectrometer based on Wollaston prism

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    Schematic of non-uniform sampling of interferogram

    Fig. 2. Schematic of non-uniform sampling of interferogram

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    Mapping relationship between optical path difference and sampling points under different wave numbers

    Fig. 3. Mapping relationship between optical path difference and sampling points under different wave numbers

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    Interferogram and spectrum of Hg-Ar. (a) Interferogram of Hg-Ar; (b) spectrum of Hg-Ar; (c) spectrum of Hg-Ar after apodization

    Fig. 4. Interferogram and spectrum of Hg-Ar. (a) Interferogram of Hg-Ar; (b) spectrum of Hg-Ar; (c) spectrum of Hg-Ar after apodization

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    Additional phase

    Fig. 5. Additional phase

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    Relative optical path difference

    Fig. 6. Relative optical path difference

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    Corrected spectrum of Hg-Ar

    Fig. 7. Corrected spectrum of Hg-Ar

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    Additional phase after correction. (a) Additional phase; (b) nonlinear term in additional phase

    Fig. 8. Additional phase after correction. (a) Additional phase; (b) nonlinear term in additional phase

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    Calibration results of spectrum lines of Hg-Ar

    Fig. 9. Calibration results of spectrum lines of Hg-Ar

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    Gaoping Liu, Chao Qu, Siqi Zhang. Analysis and Correction of Nonlinear Optical Path Difference of Fourier Transform Spectrometer[J]. Acta Optica Sinica, 2022, 42(8): 0830001

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    Paper Information

    Category: Spectroscopy

    Received: Oct. 8, 2021

    Accepted: Nov. 15, 2021

    Published Online: Mar. 30, 2022

    The Author Email: Liu Gaoping (0574119@163.com)

    DOI:10.3788/AOS202242.0830001

    Topics

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