Laser & Optoelectronics Progress, Volume. 57, Issue 23, 230102(2020)

Optical Co-Phasing Detection Technology of Segmented Telescopes

Long Zhang1,2,3, Xiaokun Wang1,2、*, Qiang Cheng1,2, and Ruoqiu Wang1,2
Author Affiliations
  • 1Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China
  • 2Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(15)
    Improved SHAPS wavefront detection technology. (a) Pupil mask[16]; (b) broad-band algorithm template[16]; (c) narrow-band algorithm template[17]
    Pupil mask layout of SHAPS. (a) Initial pupil mask design of GTC[19]; (b) pupil mask of GTC[22]; (c) pupil mask of TMT[23]
    Experiment platform of active co-phasing. (a) Design of active segmented mirror[24]; (b) micro lens array of SHAPS[24]
    Schematic diagram of PYPS wavefront detection[36]
    Optical design and physical image of the double quadrangular pyramid. (a) Optical design[34]; (b) physical image[35]
    Schematic diagram of DFS wavefront detection
    Pupil mask and fringe image. (a) KECK[43]; (b) GMT[48]; (C) JWST[49]
    Schematic diagram of PR wavefront detection
    Schematic diagram of iterative transformation phase retrieval method[65]
    Schematic diagram of nonlinear optimized phase retrieval algorithm[67]
    Schematic diagram of PD wavefront detection
    Schematic representation of the network architecture[86]
    Chief ray passes through the focal and defocal plane[88]
    • Table 1. Parameter of the KECK co-phasing procedure[18]

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      Table 1. Parameter of the KECK co-phasing procedure[18]

      Procedure nameNarrow-bandSHAPSBroad-bandSHAPS
      Capture range/μm0.100±30±3±1
      Accuracy/nm6100010030
      Number of exposures1111111
      Execution time/min20303030
      Star magnitude5456
      Central wavelength/nm852891870700
      Filter FWHM/nm3010100200
    • Table 2. Comparison of optical co-phasing detection techniques

      View table

      Table 2. Comparison of optical co-phasing detection techniques

      Procedure nameSHAPSDIPSIPYPSZPCSDFS/DHSDRIPRPD
      Capturetens/μmtens/μmhundreds/nmhundreds/nmhundreds/μmhundreds/μmhundreds/nmhundreds/nm
      Accuracy/nmfewfewfewfewtensfewfewfew
      Piston detection
      Tip/tilt detection××
      Applicable stagecoarse/finecoarse/finefinefinecoarsecoarsefinefine
      Pupil registrationneedno needneedno needneedneedno needno need
      Data processingaverageaveragesimpleaverageaveragesimplecomplexcomplex
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    Long Zhang, Xiaokun Wang, Qiang Cheng, Ruoqiu Wang. Optical Co-Phasing Detection Technology of Segmented Telescopes[J]. Laser & Optoelectronics Progress, 2020, 57(23): 230102

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Feb. 24, 2020

    Accepted: Apr. 27, 2020

    Published Online: Dec. 9, 2020

    The Author Email: Xiaokun Wang (jimwxk@sohu.com)

    DOI:10.3788/LOP57.230102

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