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Acta Optica Sinica, Volume. 42, Issue 10, 1014003(2022)

Numerical Study of Modal Properties of Large-Mode-Area Yb-Doped Optical Fiber in High-Power Laser Amplification

Chaochao Shen1,2, Fei Yu1,3、*, Chunlei Yu1,3, and Lili Hu1,3、**
Author Affiliations
  • 1Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Shanghai 201800, China
  • 2College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (15)
    Equations (0)
    References (27)
    Cited By (1)
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    Figures & Tables(15)
    Flowchart of beam iteration

    Fig. 1. Flowchart of beam iteration

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    Relative refractive index of fiber core region

    Fig. 2. Relative refractive index of fiber core region

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    Variation curves of fundamental mode and higher-order mode loss of optical fiber with laser operating power under different bending radius

    Fig. 3. Variation curves of fundamental mode and higher-order mode loss of optical fiber with laser operating power under different bending radius

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    Transverse temperature distribution curves of different laser operating powers at bending radius of 90 mm

    Fig. 4. Transverse temperature distribution curves of different laser operating powers at bending radius of 90 mm

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    Variation curves of mode differentiation with laser power under different bending radii

    Fig. 5. Variation curves of mode differentiation with laser power under different bending radii

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    Higher-order mode distribution of different laser powers at bending radius of 90 mm. (a) 0; (b) 1000 W; (c) 2000 W

    Fig. 6. Higher-order mode distribution of different laser powers at bending radius of 90 mm. (a) 0; (b) 1000 W; (c) 2000 W

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    Refractive index distribution curves of different core diameters

    Fig. 7. Refractive index distribution curves of different core diameters

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    Variation curves of transmission loss of fundamental mode and higher-order mode with laser operating power under different core diameters

    Fig. 8. Variation curves of transmission loss of fundamental mode and higher-order mode with laser operating power under different core diameters

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    Variation curves of mode differentiation with operating power under different core diameters

    Fig. 9. Variation curves of mode differentiation with operating power under different core diameters

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    Refractive index of fiber core under different nr

    Fig. 10. Refractive index of fiber core under different nr

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    Variation curves of fundamental mode and higher-order mode loss with laser operating power under different nr

    Fig. 11. Variation curves of fundamental mode and higher-order mode loss with laser operating power under different nr

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    Variation curves of mode differentiation with laser operating power under different nr

    Fig. 12. Variation curves of mode differentiation with laser operating power under different nr

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    Variation curves of fundamental mode and higher-order mode loss with operating power before and after changing thermo-optic coefficient

    Fig. 13. Variation curves of fundamental mode and higher-order mode loss with operating power before and after changing thermo-optic coefficient

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    Variation curves of mode differentiation with operating power under different bending radii

    Fig. 14. Variation curves of mode differentiation with operating power under different bending radii

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    • Table 1. Simulation parameter

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      Table 1. Simulation parameter

      ParameterValue
      dcore /μm25
      dclad /μm400
      Rb /mm80--100
      Kc /(W·m-1·K-1)1.38
      ρ /(kg·m-3)2200
      Cρ[19] /(J·kg-1·K-1)1172
      λp /nm976
      λs /nm1080
      Toc /K-11.04×10-5
      T0 /K293.15
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    Chaochao Shen, Fei Yu, Chunlei Yu, Lili Hu. Numerical Study of Modal Properties of Large-Mode-Area Yb-Doped Optical Fiber in High-Power Laser Amplification[J]. Acta Optica Sinica, 2022, 42(10): 1014003

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Nov. 11, 2021

    Accepted: Dec. 14, 2021

    Published Online: May. 10, 2022

    The Author Email: Fei Yu (yufei@siom.ac.cn), Lili Hu (ulili@siom.ac.cn)

    DOI:10.3788/AOS202242.1014003

    Topics

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