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Acta Optica Sinica, Volume. 43, Issue 11, 1126001(2023)

Encoding/Decoding of Composite Vortex Beams with Spaced Orbital Angular Momentums

Pengfei Wu1、*, Xiaodie Wang1, Jiao Wang2, Zhenkun Tan3, and Zhiyuan Jia1
Author Affiliations
  • 1School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
  • 2School of Electronic Information and Artificial Intelligence, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China
  • 3School of Opto-electronical Engineering, Xi'an Technological University, Xi'an 710021, Shaanxi, China
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    AbstractGet PDF(in Chinese)
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    Intensity distributions of 32 composite vortex beams

    Fig. 1. Intensity distributions of 32 composite vortex beams

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    Encoding table corresponding to 32 composite vortex beams

    Fig. 2. Encoding table corresponding to 32 composite vortex beams

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    Intensity distributions of single LG vortex beams corresponding to 32 composite vortex beams

    Fig. 3. Intensity distributions of single LG vortex beams corresponding to 32 composite vortex beams

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    Gradually-changing-period gratings. (a) Gradually-changing-period grating in x-axis direction; (b) gradually-changing-period grating in y-axis direction

    Fig. 4. Gradually-changing-period gratings. (a) Gradually-changing-period grating in x-axis direction; (b) gradually-changing-period grating in y-axis direction

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    Far-field diffraction pattern of LG vortex beam passing through gradually-changing-period grating in x-axis direction. (a) LG vortex beam |lm=+5,1〉; (b) gradually-changing-period grating along x-axis; (c) far-field diffraction pattern; (d) +1 order diffraction pattern; (e) 0 order diffraction pattern

    Fig. 5. Far-field diffraction pattern of LG vortex beam passing through gradually-changing-period grating in x-axis direction. (a) LG vortex beam |lm=+5,1〉; (b) gradually-changing-period grating along x-axis; (c) far-field diffraction pattern; (d) +1 order diffraction pattern; (e) 0 order diffraction pattern

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    Far-field diffraction patterns corresponding to 32 single LG vortex beams passing through gradually-changing-period grating in x-axis direction

    Fig. 6. Far-field diffraction patterns corresponding to 32 single LG vortex beams passing through gradually-changing-period grating in x-axis direction

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    Far-field diffraction pattern of LG vortex beam passing through gradually-changing-period grating in y-axis direction. (a) LG vortex beam |lm=+3, 2〉; (b) gradually-changing-period grating along y-axis; (c) far-field diffraction pattern; (d) +1 order diffraction pattern; (e) 0 order diffraction pattern

    Fig. 7. Far-field diffraction pattern of LG vortex beam passing through gradually-changing-period grating in y-axis direction. (a) LG vortex beam |lm=+3, 2〉; (b) gradually-changing-period grating along y-axis; (c) far-field diffraction pattern; (d) +1 order diffraction pattern; (e) 0 order diffraction pattern

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    Far-field diffraction patterns corresponding to 32 single LG vortex beams passing through gradually-changing-period grating in y-axis direction

    Fig. 8. Far-field diffraction patterns corresponding to 32 single LG vortex beams passing through gradually-changing-period grating in y-axis direction

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    Pengfei Wu, Xiaodie Wang, Jiao Wang, Zhenkun Tan, Zhiyuan Jia. Encoding/Decoding of Composite Vortex Beams with Spaced Orbital Angular Momentums[J]. Acta Optica Sinica, 2023, 43(11): 1126001

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    Paper Information

    Category: Physical Optics

    Received: Dec. 29, 2022

    Accepted: Feb. 20, 2023

    Published Online: May. 29, 2023

    The Author Email: Wu Pengfei (wupengf@xaut.edu.cn)

    DOI:10.3788/AOS222187

    Topics

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