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High Power Laser and Particle Beams, Volume. 32, Issue 7, 071008(2020)

Laser beam coherence and divergence angle complex controlling technique

Xiaolong Ni1...2, Xufang Zhu1, Xin Yu2,3, Haifeng Yao1,2, Chunyi Chen4 and Zhi Liu1,* |Show fewer author(s)
Author Affiliations
  • 1National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun 130022, China
  • 2Changchun Lighteek Photonics Co., Ltd, Changchun 130000, China
  • 3College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
  • 4School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
    Equations (21)
    References (11)
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    Figures & Tables(8)
    Complex phase map

    Fig. 1. Complex phase map

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    Experimental setup for testing the coherence width

    Fig. 2. Experimental setup for testing the coherence width

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    Interference fringes

    Fig. 3. Interference fringes

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    Coherence widths measured in experiment

    Fig. 4. Coherence widths measured in experiment

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    Schematic of beam divergence angle measurement

    Fig. 5. Schematic of beam divergence angle measurement

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    Diagram of measurement spot

    Fig. 6. Diagram of measurement spot

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    The divergence angle measured in experiment

    Fig. 7. The divergence angle measured in experiment

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    • Table 1. Selection table of double pinhole

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      Table 1. Selection table of double pinhole

      aperturehole spacing/mm
      d＝0.9 mm d＝1.5 mm d＝0.9 mm d＝1.5 mm
      0.090.0150.7997632.221564
      0.090.160.8910942.527646
      0.100.170.9873622.853476
      0.110.181.1947083.199052
      0.120.201.4218013.949447
      0.130.251.6686416.171011
      0.140.301.9352298.886256
      0.150.352.22156412.09518
      0.200.403.94944715.79779
      0.250.456.17101119.99408
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    Xiaolong Ni, Xufang Zhu, Xin Yu, Haifeng Yao, Chunyi Chen, Zhi Liu. Laser beam coherence and divergence angle complex controlling technique[J]. High Power Laser and Particle Beams, 2020, 32(7): 071008

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    Paper Information

    Category: High Power Laser Physics and Technology

    Received: Mar. 25, 2020

    Accepted: --

    Published Online: Jul. 10, 2020

    The Author Email: Liu Zhi (liuzhi@cust.edu.cn)

    DOI:10.11884/HPLPB202032.200078

    Topics

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