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Opto-mechanical-thermal integration analysis of Doppler asymmetric spatial heterodyne interferometer

WANG Jin-jiang JIANG Lun TONG Shou-feng PEI Hui-yi CUI Yong GUO Ming-hang

王锦疆, 江伦, 佟首峰, 裴惠熠, 崔勇, 郭名航. 多普勒外差干涉仪的光机热集成分析[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0234
引用本文: 王锦疆, 江伦, 佟首峰, 裴惠熠, 崔勇, 郭名航. 多普勒外差干涉仪的光机热集成分析[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0234
WANG Jin-jiang, JIANG Lun, TONG Shou-feng, PEI Hui-yi, CUI Yong, GUO Ming-hang. Opto-mechanical-thermal integration analysis of Doppler asymmetric spatial heterodyne interferometer[J]. Chinese Optics. doi: 10.37188/CO.2023-0234
Citation: WANG Jin-jiang, JIANG Lun, TONG Shou-feng, PEI Hui-yi, CUI Yong, GUO Ming-hang. Opto-mechanical-thermal integration analysis of Doppler asymmetric spatial heterodyne interferometer[J]. Chinese Optics. doi: 10.37188/CO.2023-0234

多普勒外差干涉仪的光机热集成分析

Opto-mechanical-thermal integration analysis of Doppler asymmetric spatial heterodyne interferometer

doi: 10.37188/CO.2023-0234
Funds: Wang Jin-jiang (1998-), male, born in Hanzhong, Shaanxi Province, master candidate, He received his bachelor's degree from Changchun University of Science and Technology in 2021,mainly engaged in space optic-al technology and other aspects of research. E-mail: 13843075373@163.com Supported by National Key Research and Development Plan Project (No. 2022YFB3902500); Jilin Province key research and development plan project(NO.20230201006GX)
More Information
    Author Bio:

    Wang Jin-jiang (1998—), male, born in Hanzhong, Shaanxi Province, master candidate, He received his bachelor's degree from Changchun University of Science and Technology in 2021,mainly engaged in space optic-al technology and other aspects of research. E-mail: 13843075373@163.com

    TONG Shou-feng (1972—), male, born in Changchun, Jilin Province. Ph.D., professor and doctoral supervisor. He received his Ph.D. from Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences in 2000. He is mainly engaged in space remote sensing and laser communication research. E-mail: tsf1998@sina.com

  • 摘要:

    为提高地基多普勒非对称空间外差(DASH)干涉仪在恶劣温度下的探测精度,对系统进行了光机热集成分析。首先,依据干涉仪的工作原理和相位算法建立了相位与温度的关联依据。其次,设计了光机热分析模型和热变形数据获取模型,采用温度负载仿真分析给出了干涉模块和成像光学系统在不同温度下的变形数据,拟合得出热变形所导致的相位误差。最后,基于各部件热变形造成的风速误差,给出合理的温控方案。结果表明,干涉模块占据主因,必须确保温度控制在20±0.05 °C内,并针对温度敏感部件进行温度控制,此时该部件造成的风速误差为3.8 m/s。成像光学系统放大倍数的热漂移、成像光学系统和探测器相对位置的热漂移占据次因,应将其控制在20±2 °C以内,此时该部件造成的风速误差为3.05 m/s,综上可以将干涉模块、成像光学系统、成像光学系统与探测器相对位置三者共同造成的风速测量误差控制在6.85 m/s内。本文的分析方案和温控措施可以为DASH干涉仪工程应用提供理论依据。

     

  • Figure 1.  Schematic diagram of DASH interferometer.

    Figure 2.  Analysis flow of opto-mechanical-thermal integration.

    Figure 3.  Main view of the interferometer

    Figure 4.  Simulated interference fringes before fine tuning. (a) Interference fringe (b) Fringe number spectrum

    Figure 5.  ZEMAX simulation: (a) Main view of the interferometer (b) Simulation diagram of interference fringe.

    Figure 6.  Physical picture of DASH interferometer.

    Figure 7.  Schematic diagram of interference module. γ: wedge angle of spacer, α: vertex angle of field-widening prism, η: wedge angle of grating spacer

    Figure 8.  Interference module: (a) Optical model (b) Interference module physical diagram.

    Figure 9.  Interference module optical-mechanical structure: (a) Optical-mechanical model (b) Interference module optical-mechanical structure.

    Figure 10.  Optical-mechanical finite element model of interference module.

    Figure 11.  Reference points location.

    Figure 12.  Local coordinate system of reference points.

    Figure 13.  Interference module optical-mechanical structure: (a) Optical model(b) Opto-mechanical model.

    Figure 14.  Optical-mechanical physical picture of imaging optical system.

    Figure 15.  Imaging optical system and detector relative position monitoring model

    Figure 16.  Thermal analysis cloud map of imaging optical system

    Figure 17.  Thermal deformation cloud map of imaging optical system

    Figure 19.  Relationship between Littrow angle and temperature: (a)G1 arm. (b)G2 arm.

    Figure 18.  Relationship between Littrow wavenumber and temperature: (a)G1 arm. (b)G2 arm.

    Figure 20.  Relationship between phase difference caused by interference of two arms and temperature

    Figure 21.  Relationship between optical path difference and temperature

    Figure 22.  Relationship between phase difference and temperature caused by optical path differential thermal drift

    Figure 23.  Wind speed error caused by G1 and G2 thermal drift

    Figure 24.  Wind speed error caused by optical path difference thermal drift

    Figure 25.  Thermal analysis cloud map of imaging optical system

    Figure 26.  Thermal deformation cloud map of imaging optical system

    Figure 27.  Magnification of imaging optical system at different temperatures.

    Figure 28.  Magnification error of imaging optical system

    Figure 29.  Relationship between phase error caused by thermal drift of magnification and temperature

    Figure 30.  Relative position thermal analysis cloud map of the imaging optical system and the detector

    Figure 31.  Relation between relative position migration and temperature

    Figure 32.  Relationship between phase drift caused by relative position migration and temperature

    Figure 33.  Wind speed error caused by thermal drift of magnification

    Figure 34.  Wind speed error caused by thermal drift of relative position

    Table  1.   Index parameters of DASH interferometer

    Attribute Property
    Fore-optical system
    Field of view5.314°×4°
    Clear aperture diameter35 mm
    Interferometer module
    Littrow wavelength/nm557.137
    Target line wavelength/nm557.7
    Groove spacing/(gr/mm)600
    Littrow angle/(°)9.6216
    Interferometer offset/cm1.75
    Imaging-optical system
    F/#7.35
    Total length223.5 mm
    Magnification0.5899
    Transmissivity0.93
    Detector
    CCD pixel size/$ \mathrm{\mu } $m13
    CCD pixel number1024
    下载: 导出CSV

    Table  2.   - Material characteristics of interferometer

    ElementsMaterialsYoung’s modulus (MPa)Poisson’s ratioThermal Conductivity
    ($ \mathrm{W}\cdot {\mathrm{m}\mathrm{m}}^{-1}\cdot {\mathrm{K}}^{-1} $)
    CET
    ($ {10}^{-7}\cdot {\mathrm{K}}^{-1} $)
    Beam splitting(BS)H-K9LAGT814500.2090.0007572
    Field-widening Prism(F1,F2)H-LaK2A941500.2950.0007580
    Gratings(G1,G2)Fused-Silica740000.170.001385.1
    Spacer(W1)H-FK6700700.30.00075131
    Spacer(W2)Fused-Silica7400000.170.001385.1
    Parallel bias(P1)H-K9LAGT814500.2090.0007572
    Mechanical shell,Work platformAl alloy2A12720000.30.203230
    下载: 导出CSV
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  • 收稿日期:  2023-12-23
  • 录用日期:  2024-03-08
  • 网络出版日期:  2024-05-10

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