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Acta Optica Sinica, Volume. 45, Issue 5, 0523001(2025)

Influence of Bonding Structure and Pumping Optical Parameters on Thermal Effects in Ho∶YAG Laser Crystals

Haidong Miao1,2, Jianwei Jiang3, and Jing Wu1、*
Author Affiliations
  • 1College of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu , China
  • 2College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, Guangdong , China
  • 3College of Sciences, Jiangsu University of Science and Technology, Zhenjiang 212100, Jiangsu , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
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    References (26)
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    Figures & Tables(8)
    Single-end pulse pumped double-end bonded Ho∶YAG model

    Fig. 1. Single-end pulse pumped double-end bonded Ho∶YAG model

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    Gaussian intensity distribution inside single-end pulse pumped double-end bonded Ho∶YAG crystal

    Fig. 2. Gaussian intensity distribution inside single-end pulse pumped double-end bonded Ho∶YAG crystal

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    Transient temperature field distributions of non-bonded and double-end bonded Ho∶YAG crystals. (a) Non-bonded; (b) double-end bonded

    Fig. 3. Transient temperature field distributions of non-bonded and double-end bonded Ho∶YAG crystals. (a) Non-bonded; (b) double-end bonded

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    Temperature field distributions of double-end bonded Ho∶YAG crystal with different pump power. (a) 15 W; (b) 20 W; (c) 25 W

    Fig. 4. Temperature field distributions of double-end bonded Ho∶YAG crystal with different pump power. (a) 15 W; (b) 20 W; (c) 25 W

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    Temperature field distributions of double-end bonded Ho∶YAG crystal with different waist radii. (a) 200 μm; (b) 250 μm; (c) 300 μm

    Fig. 5. Temperature field distributions of double-end bonded Ho∶YAG crystal with different waist radii. (a) 200 μm; (b) 250 μm; (c) 300 μm

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    Temperature field distributions of double-end bonded Ho∶YAG crystal with different repetition rates. (a) 150 Hz; (b) 200 Hz; (c) 250 Hz

    Fig. 6. Temperature field distributions of double-end bonded Ho∶YAG crystal with different repetition rates. (a) 150 Hz; (b) 200 Hz; (c) 250 Hz

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    • Table 1. Parameters used to simulate optical field distribution

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      Table 1. Parameters used to simulate optical field distribution

      ParameterValue
      Pump power /W10
      Pump beam waist radius /μm400
      Pumping light repetition rate /Hz100
      Pulse width /ms4
      Ho∶YAG crystal doping concentration /%3.5
      Ho∶YAG crystal length/cm0.8
      Ho∶YAG crystal radius/cm0.3

    • Table 2. Parameters used to simulate the temperature

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      Table 2. Parameters used to simulate the temperature

      ParameterValue
      Thermal conductivity /（W·cm-1·K-1）0.14
      Heat transfer coefficient of air /（W·cm-2·K-1）0.5×10-4
      Density /（kg·m-3）4570
      Specific heat capacity/ （J·kg-1·K-1）590
      Non-bonded Ho∶YAG crystal size /（mm3）Φ6×8
      Double-end bonded Ho∶YAG crystal size /（mm3）Φ6×（3+8+3）
      Initial temperature /℃22
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    Haidong Miao, Jianwei Jiang, Jing Wu. Influence of Bonding Structure and Pumping Optical Parameters on Thermal Effects in Ho∶YAG Laser Crystals[J]. Acta Optica Sinica, 2025, 45(5): 0523001

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    Paper Information

    Category: Optical Devices

    Received: Nov. 26, 2024

    Accepted: Jan. 16, 2025

    Published Online: Mar. 21, 2025

    The Author Email: Jing Wu (wujing@nuist.edu.cn)

    DOI:10.3788/AOS241795

    CSTR:32393.14.AOS241795

    Topics

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