Opto-Electronic Advances, Volume. 6, Issue 12, 230017(2023)

Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry

Chunyan Chu1...2, Zhentao Liu3,4,*, Mingliang Chen3,4,**, Xuehui Shao5, Guohai Situ3,4, Yuejin Zhao1,2, and Shensheng Han36 |Show fewer author(s)
Author Affiliations
  • 1Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, Beijing 100081, China
  • 2School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 3Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 4University of Chinese Academy of Sciences, Beijing 100049, China
  • 5National Laboratory of Aerospace Intelligent Control Technology, Beijing 100089, China
  • 6Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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    Figures & Tables(6)
    Schematic of wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry.
    (a) Traditional optical synthetic aperture system. (b) Schematic of wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry.
    (a) Schematic diagram of the simulation structure. (b) Structure of sub-aperture SRPMs array. (c) Optical path structure of the experiment.
    Simulation and experimental results. The spectral widths of the filters were 532 ± 0.5 nm. (a1–c1) Targets. (2–4) Simulation results. (5–7) Experimental results. In the experiment, the exposure times of CCD were 1.2 s, 0.75 s, 0.5 s, and the gains of CCD were 30 dB, 30 dB, 28 dB, respectively. (2, 5) Spatial intensity autocorrelation of CCD. (3, 6) Reconstruction of target image using phase retrieval algorithms. (4, 7) One-dimensional normalized date of double slits reconstruction image. The blue lines indicate half of the maximum value.
    Simulation and experimental results of wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry. (a–e) The spectral ranges of the filters were 532 ±5 nm, ±10 nm, ±15 nm, ±25 nm, ±50 nm, respectively. (1–3) Simulation results. (4–6) Experimental results. The sampling exposure times of CCD were 250 ms, and the gains of CCD were 9 dB, 16 dB, 23 dB, 25 dB, 30 dB, respectively. (1, 4) The detected image by CCD. (2, 5) Reconstruction of target image using phase retrieval algorithms. (3, 6) One-dimensional normalized date of double slits reconstruction image. The blue lines indicate half of the maximum value.
    Experimental results of different sub-aperture SRPMS arrays. (a) Different sparse array structures. (b) Spatial intensity autocorrelation of different sparse array structures. (c1–c4) Reconstruction of ′s′ image using phase retrieval algorithms by different sparse array structures. (d1–d4) Reconstruction of double-slit image using phase retrieval algorithms by different sparse array structures. (5) Target letter ′s′ and double-slit, whose sizes were 2.0 mm and 0.98 mm, respectively.
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    Chunyan Chu, Zhentao Liu, Mingliang Chen, Xuehui Shao, Guohai Situ, Yuejin Zhao, Shensheng Han. Wide-spectrum optical synthetic aperture imaging via spatial intensity interferometry[J]. Opto-Electronic Advances, 2023, 6(12): 230017

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    Paper Information

    Category: Research Articles

    Received: Feb. 8, 2023

    Accepted: Mar. 6, 2023

    Published Online: Mar. 13, 2024

    The Author Email: Liu Zhentao (ZTLiu), Chen Mingliang (MLChen)

    DOI:10.29026/oea.2023.230017

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