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Acta Optica Sinica, Volume. 38, Issue 6, 0630003(2018)

Hyper-Resolution Spatial Heterodyne Spectrometer for Hydroxyl Radical OH

Haiyan Luo1,2, Xuejing Fang1,2,3, Guangxiao Hu1,2,3, Hailiang Shi1,2, and Wei Xiong1,2、*
Author Affiliations
  • 1 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2 Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 3 University of Science and Technology of China, Hefei, Anhui 230026, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (12)
    Cited By (2)
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    Figures & Tables(12)
    (a) Schematic of principle of optics in dispersive cross section and (b) schematic of principle of optics in 1-D imaging direction

    Fig. 1. (a) Schematic of principle of optics in dispersive cross section and (b) schematic of principle of optics in 1-D imaging direction

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    Ray trace of transmission arm in wedge principle section

    Fig. 2. Ray trace of transmission arm in wedge principle section

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    Ray trace of imaging lens

    Fig. 3. Ray trace of imaging lens

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    (a) Distortion and (b) spot diagram of imaging lens

    Fig. 4. (a) Distortion and (b) spot diagram of imaging lens

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    Ray trace of fore cylindrical lens and collimating lens

    Fig. 5. Ray trace of fore cylindrical lens and collimating lens

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    Spatial spot diagram of fore-lens

    Fig. 6. Spatial spot diagram of fore-lens

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    Spatial modulation transfer function of fore-lens

    Fig. 7. Spatial modulation transfer function of fore-lens

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    Sun observation by hyper-resolution spectrometer for mesospheric OH radical

    Fig. 8. Sun observation by hyper-resolution spectrometer for mesospheric OH radical

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    (a) Original interferogram; (b) experimental and simulated spectra; (c) residual of experimental and simulated spectra

    Fig. 9. (a) Original interferogram; (b) experimental and simulated spectra; (c) residual of experimental and simulated spectra

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    Enlarged (a) spectra and (b) residual of experimental and simulated spectra

    Fig. 10. Enlarged (a) spectra and (b) residual of experimental and simulated spectra

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    • Table 1. Parameters of spatial heterodyne interference unit

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      Table 1. Parameters of spatial heterodyne interference unit

      ParameterOriginal valueCorrected value
      Littrow wavelength307 nm307 nm
      GratingRuled area: 12.02×15.44 mm2Ruled area: 12.02×15.44 mm2
      Groove density: 1200 l·mm-1Groove density: 1200 l·mm-1
      Rotation angle: 4.223°Rotation angle: 3.924°
      Air spacer 1Apex angle: 9.719°Apex angle: 9.719°
      Field-widening wedgeApex angle: 13.048°Apex angle: 13.644°
      Material: F_SiLiCaMaterial: F_SiLiCa
      Air spacer 2Apex angle: 0.895°Apex angle: 0°
      Beam splitterSize: 35 mm×35 mm×35 mmSize: 35 mm×35 mm×35 mm
      Material: F_SiLiCaMaterial: F_SiLiCa

    • Table 2. Design specifications of SHS for hydroxyl radical OH

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      Table 2. Design specifications of SHS for hydroxyl radical OH

      ParameterValue
      X in dispersive cross sectionY in 1-D imaging direction
      Spectral resolution /nm0.02
      Spectral range (FWHM) /nm308.2-309.8
      Working distance /km2574
      Focal length /mm380.7
      Field of limb view@500 km /(°)+/-1.00(90 km)+/-0.78(70 km)
      Object height /km902
      Image height /mm13.312(0.013×1024)0.296(0.013×22.75)
      Focal length of cylindrical lens /mm888¥
      Focal length of collimating lens /mm445445
      Grating size /mm15.4412.02
      Magnification of imaging lens-0.8622∶1
      Detector size /mm13.312(0.013×1024)10.36(0.013×797)
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    Haiyan Luo, Xuejing Fang, Guangxiao Hu, Hailiang Shi, Wei Xiong. Hyper-Resolution Spatial Heterodyne Spectrometer for Hydroxyl Radical OH[J]. Acta Optica Sinica, 2018, 38(6): 0630003

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    Paper Information

    Category: Spectroscopy

    Received: Dec. 19, 2017

    Accepted: --

    Published Online: Jul. 9, 2018

    The Author Email: Xiong Wei (frank@aiofm.ac.cn)

    DOI:10.3788/AOS201838.0630003

    Topics

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