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Acta Optica Sinica, Volume. 42, Issue 4, 0414001(2022)

Theoretical Optimization for Spectrum of Pump Source of LD End Pumped Nd∶YAG Laser in Wide Temperature Range

Chun Peng*, Ren Chen, Yaping Liu, Zhenyu Wu, Jieping Luo, Qincai Li, and Huirong Mu
Author Affiliations
  • Southwest Institute of Technical Physics, Chengdu, Sichuan 610041, China
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    Figures&Tables (10)
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    References (15)
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    Figures & Tables(10)
    Absorption coefficient of Nd∶YAG crystal with doping concentration of 1.0%

    Fig. 1. Absorption coefficient of Nd∶YAG crystal with doping concentration of 1.0%

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    Optimal spectral distribution of pump source with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

    Fig. 2. Optimal spectral distribution of pump source with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

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    Absorption efficiency of pump source system with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

    Fig. 3. Absorption efficiency of pump source system with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

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    Relative thermal focal length of laser crystal with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

    Fig. 4. Relative thermal focal length of laser crystal with different absorption lengths and doping concentrations. (a) Absorption length of 20 mm and doping concentration of 0.5%; (b) absorption length of 30 mm and doping concentration of 0.5%; (c) absorption length of 40 mm and doping concentration of 0.5%; (d) absorption length of 20 mm and doping concentration of 0.8%; (e) absorption length of 30 mm and doping concentration of 0.8%; (f) absorption length of 40 mm and doping concentration of 0.8%; (g) absorption length of 20 mm and doping concentration of 1.0%; (h) absorption length of 30 mm and doping concentration of 1.0%; (i) absorption length of 40 mm and doping concentration of 1.0%

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    Spectra of pump source

    Fig. 5. Spectra of pump source

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    Absorption efficiency of pump light

    Fig. 6. Absorption efficiency of pump light

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    Relative thermal focal length

    Fig. 7. Relative thermal focal length

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    • Table 1. Value of objective function

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      Table 1. Value of objective function

      Dopingconcentration /%Absorption length of 20 mmAbsorption length of 30 mmAbsorption length of 40 mm
      Optical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystem
      0.50.7310.6280.8370.7480.8960.820
      0.80.8550.7650.9190.8580.9480.907
      1.00.8940.8190.9420.8970.9650.936

    • Table 2. Absorption stabilityunit:%

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      Table 2. Absorption stabilityunit:%

      Dopingconcentration /%Absorption length of 20 mmAbsorption length of 30 mmAbsorption length of 40 mm
      Optical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystem
      0.588.565.187.176.190.882.9
      0.888.277.793.086.895.891.8
      1.090.982.995.390.897.694.9

    • Table 3. Stability of thermal focal lengthunit:%

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      Table 3. Stability of thermal focal lengthunit:%

      Dopingconcentration /%Absorption length of 20 mmAbsorption length of 30 mmAbsorption length of 40 mm
      Optical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystemOptical pumpsource system808 nm LDpump sourcesystem
      0.588.261.984.271.386.877.6
      0.884.572.889.180.789.283.4
      1.087.077.689.182.889.385.2
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    Chun Peng, Ren Chen, Yaping Liu, Zhenyu Wu, Jieping Luo, Qincai Li, Huirong Mu. Theoretical Optimization for Spectrum of Pump Source of LD End Pumped Nd∶YAG Laser in Wide Temperature Range[J]. Acta Optica Sinica, 2022, 42(4): 0414001

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jul. 14, 2021

    Accepted: Aug. 27, 2021

    Published Online: Jan. 29, 2022

    The Author Email: Peng Chun (pengchun1729@foxmail.com)

    DOI:10.3788/AOS202242.0414001

    Topics

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