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Acta Optica Sinica, Volume. 41, Issue 9, 0911002(2021)

Quantitative Phase Imaging Based on Defocused Shack-Hartmann Sensor

Jingwei Song1,2,3, Changwei Li1,2,3、*, and Sijiong Zhang1,2,3
Author Affiliations
  • 1National Astronomical Observatories, Nanjing Institute of Astronomical Optics & Technology, Chinese Academy of Sciences, Nanjing, Jiangsu 210042, China;
  • 2Key Laboratory of Astronomical Optics & Technology (Nanjing Institute of Astronomical Optics & Technology), Chinese Academy of Sciences, Nanjing, Jiangsu 210042, China;
  • 3School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (11)
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    Figures & Tables(13)
    Schematic of defocused Shack-Hartmann wavefront sensor

    Fig. 1. Schematic of defocused Shack-Hartmann wavefront sensor

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    Diagram of experimental setup for quantative phase imaging

    Fig. 2. Diagram of experimental setup for quantative phase imaging

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    Phase retrieval flowchart

    Fig. 3. Phase retrieval flowchart

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    Optical path difference of microlens array. (a) Result of phase imaging; (b) difference between theoretical value and phase imaging result

    Fig. 4. Optical path difference of microlens array. (a) Result of phase imaging; (b) difference between theoretical value and phase imaging result

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    Phase imaging results of phase screen. (a) Input optical path difference; (b) optical path difference of phase imaging; (c) residual error

    Fig. 5. Phase imaging results of phase screen. (a) Input optical path difference; (b) optical path difference of phase imaging; (c) residual error

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    Curve of evaluation function

    Fig. 6. Curve of evaluation function

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    Phase imaging results of phase objects. (a) Optical path difference caused by object; (b) optical path difference obtained by phase imaging; (c) residual error

    Fig. 7. Phase imaging results of phase objects. (a) Optical path difference caused by object; (b) optical path difference obtained by phase imaging; (c) residual error

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    Curve of evaluation function

    Fig. 8. Curve of evaluation function

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    Phase imaging results of grating. (a) Input optical path difference; (b) optical path difference of phase imaging; (c) residual error

    Fig. 9. Phase imaging results of grating. (a) Input optical path difference; (b) optical path difference of phase imaging; (c) residual error

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    Curve of evaluation function

    Fig. 10. Curve of evaluation function

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    Evaluation function curves. (a) C1 and C2; (b) C3 and C4

    Fig. 11. Evaluation function curves. (a) C1 and C2; (b) C3 and C4

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    Optical path difference and residual error of phase object imaging under different SNR. (a) 20 dB; (b) 30 dB; (c) 40 dB

    Fig. 12. Optical path difference and residual error of phase object imaging under different SNR. (a) 20 dB; (b) 30 dB; (c) 40 dB

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    • Table 1. Error of phase imaging under different SNR

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      Table 1. Error of phase imaging under different SNR

      SNR /dBError /μm
      203.320×10-2
      302.800×10-3
      403.000×10-4
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    Jingwei Song, Changwei Li, Sijiong Zhang. Quantitative Phase Imaging Based on Defocused Shack-Hartmann Sensor[J]. Acta Optica Sinica, 2021, 41(9): 0911002

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    Paper Information

    Category: Imaging Systems

    Received: Oct. 9, 2020

    Accepted: Dec. 1, 2020

    Published Online: May. 8, 2021

    The Author Email: Li Changwei (cwli@niaot.ac.cn)

    DOI:10.3788/AOS202141.0911002

    Topics

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