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Chinese Optics Letters, Volume. 17, Issue 4, 040501(2019)

Angular filtering by volume Bragg grating in photothermorefractive glass for nanosecond laser pulse

Baoxing Xiong1,2,3, Fan Gao1,2,3, Xiang Zhang1,2,3、*, and Xiao Yuan1,2,3
Author Affiliations
  • 1School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China
  • 2Jiangsu Provincial Key Laboratory of Advanced Optical Manufacturing Technologies and Key Laboratory of Modern Optical Technologies of the Ministry of Education, Suzhou 215006, China
  • 3Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
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    References (30)
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    (a) Schematic diagram of the experiment on an angular filter for an ns pulse laser. (b) The structural schematic diagram of a 2D angular filter.

    Fig. 1. (a) Schematic diagram of the experiment on an angular filter for an ns pulse laser. (b) The structural schematic diagram of a 2D angular filter.

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    Stimulated angular selectivity of two VBGs.

    Fig. 2. Stimulated angular selectivity of two VBGs.

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    Near-field distribution of the (a) modulated beam and (b) filtered beam through the angular filter.

    Fig. 3. Near-field distribution of the (a) modulated beam and (b) filtered beam through the angular filter.

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    PSD curves of the modulated and filtered beams in (a) the x direction and (b) the y direction.

    Fig. 4. PSD curves of the modulated and filtered beams in (a) the x direction and (b) the y direction.

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    • Table 1. Parameters of the VBGs Used in the Experiment

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      Table 1. Parameters of the VBGs Used in the Experiment

       VBG-IVBG-II
      Central wavelength1053 nm
      Period2.50 μm3.49 μm
      Thickness3.54 mm
      Tilt angle−0.16°0.14°
      Bragg angle11.9°8.9°

    • Table 2. Results of M and C

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      Table 2. Results of M and C

       Modulated BeamFiltered Beam
      M1.9541.115
      C38.5%8.6%
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    Baoxing Xiong, Fan Gao, Xiang Zhang, Xiao Yuan, "Angular filtering by volume Bragg grating in photothermorefractive glass for nanosecond laser pulse," Chin. Opt. Lett. 17, 040501 (2019)

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    Paper Information

    Category: Diffraction and Gratings

    Received: Nov. 9, 2018

    Accepted: Jan. 15, 2019

    Published Online: Apr. 3, 2019

    The Author Email: Xiang Zhang (zxiang@suda.edu.cn)

    DOI:10.3788/COL201917.040501

    Topics

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