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Photonics Research, Volume. 9, Issue 7, 1191(2021)

Superior performance of a 2 kHz pulse Nd:YAG laser based on a gradient-doped crystal

Meng’en Wei1,2, Tingqing Cheng1, Renqin Dou3, Qingli Zhang3, and Haihe Jiang1,2、*
Author Affiliations
  • 1Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
  • 2University of Science and Technology of China, Hefei 230026, China
  • 3Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
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    Nd3+ concentration distribution along the crystal rod axis.

    Fig. 1. Nd3+ concentration distribution along the crystal rod axis.

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    Different temperature distribution of the two crystal rods under pump power of 45 W. Crystals rod of (a) 0.39–0.80 at.%, (b) 0.60 at.%.

    Fig. 2. Different temperature distribution of the two crystal rods under pump power of 45 W. Crystals rod of (a) 0.39–0.80 at.%, (b) 0.60 at.%.

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    Different temperature distribution of the rod axis.

    Fig. 3. Different temperature distribution of the rod axis.

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    Dependence of the focal length on the pump power. Different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%. Theoretical calculation of (f) 0.60 at.% and (g) 0.39–0.80 at.%.

    Fig. 4. Dependence of the focal length on the pump power. Different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%. Theoretical calculation of (f) 0.60 at.% and (g) 0.39–0.80 at.%.

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    Experimental arrangement for comparison of the continuously spatially varying and conventional crystals. Schematic configurations for the different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%.

    Fig. 5. Experimental arrangement for comparison of the continuously spatially varying and conventional crystals. Schematic configurations for the different Nd:YAG concentrations of (a) 0.40 at.%, (b) 0.60 at.%, (c) 0.80 at.%, (d) 0.39–0.80 at.%, and (e) 0.80–0.39 at.%.

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    Output average power with respect to the absorbed pump power for each laser crystal.

    Fig. 6. Output average power with respect to the absorbed pump power for each laser crystal.

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    Beam profiles and beam qualities of (a) 0.39–0.80 at.% and (b) 0.60 at.%.

    Fig. 7. Beam profiles and beam qualities of (a) 0.39–0.80 at.% and (b) 0.60 at.%.

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    Meng’en Wei, Tingqing Cheng, Renqin Dou, Qingli Zhang, Haihe Jiang, "Superior performance of a 2 kHz pulse Nd:YAG laser based on a gradient-doped crystal," Photonics Res. 9, 1191 (2021)

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Mar. 12, 2021

    Accepted: Apr. 10, 2021

    Published Online: Jun. 9, 2021

    The Author Email: Haihe Jiang (hjiang@aiofm.ac.cn)

    DOI:10.1364/PRJ.424989

    Topics

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