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Acta Optica Sinica, Volume. 43, Issue 22, 2214003(2023)

1.7 μm High-Power Vortex Beam Generation Based on Random Fiber Lasers

Guanyu Yu1, Chunxiang Zhang2, Zheng Huang3, Rui Liu3, Rui Ma1, Zhiyong Bai3, Dianyuan Fan1, and Jun Liu1、*
Author Affiliations
  • 1International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Shenzhen University Institute of Microscale Optoelectronics, Shenzhen 518060, Guangdong , China
  • 2College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, Guangdong , China
  • 3Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong , China
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    Experimental setup of the 1.7 μm high-power vortex RFL

    Fig. 1. Experimental setup of the 1.7 μm high-power vortex RFL

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    Experimental results of output characteristics of the 1.7 μm band fiber random laser. (a) Relationship between output power and residual pump power and the pump power; (b) relationship between power ratio and optical to optical conversion efficiency and the pump power; (c) evolution of output spectrum with different output powers

    Fig. 2. Experimental results of output characteristics of the 1.7 μm band fiber random laser. (a) Relationship between output power and residual pump power and the pump power; (b) relationship between power ratio and optical to optical conversion efficiency and the pump power; (c) evolution of output spectrum with different output powers

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    Experimental results of output characteristics of the 1.7 μm band vortex RFL. (a) Transmission spectrum of the spiral LPFG; (b) relationship between output power and slope efficiency and incident power; (c) evolution of the output spectrum with different output powers

    Fig. 3. Experimental results of output characteristics of the 1.7 μm band vortex RFL. (a) Transmission spectrum of the spiral LPFG; (b) relationship between output power and slope efficiency and incident power; (c) evolution of the output spectrum with different output powers

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    Theoretical simulation results and experimental measurement results of the intensity profiles of reference Gaussian beam, first order vortex beam, interference pattern between first order vortex beam, and reference Gaussian spherical wave. (a)-(c) Theoretical simulation results; (d)-(f) experimental measurement results

    Fig. 4. Theoretical simulation results and experimental measurement results of the intensity profiles of reference Gaussian beam, first order vortex beam, interference pattern between first order vortex beam, and reference Gaussian spherical wave. (a)-(c) Theoretical simulation results; (d)-(f) experimental measurement results

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    Vortex RFL. (a) Short time temporal trace; (b) radio frequency spectrum

    Fig. 5. Vortex RFL. (a) Short time temporal trace; (b) radio frequency spectrum

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    Guanyu Yu, Chunxiang Zhang, Zheng Huang, Rui Liu, Rui Ma, Zhiyong Bai, Dianyuan Fan, Jun Liu. 1.7 μm High-Power Vortex Beam Generation Based on Random Fiber Lasers[J]. Acta Optica Sinica, 2023, 43(22): 2214003

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jun. 30, 2023

    Accepted: Sep. 4, 2023

    Published Online: Nov. 20, 2023

    The Author Email: Liu Jun (liu-jun-1987@live.cn)

    DOI:10.3788/AOS231203

    Topics

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