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Photonics Research, Volume. 7, Issue 8, 933(2019)

One-order-higher Cr4+ conversion efficiency in Cr4+:YAG transparent ceramics for a high-frequency passively Q-switched laser

Yingshuang Shan1, Le Zhang1,2,3,6、*, Tianyuan Zhou1,2, Cen Shao1, Lei Zhang4, Yuelong Ma1,5, Qing Yao1,5, Zhigang Jiang1,5, Farida A. Selim2, and Hao Chen1,7、*
Author Affiliations
  • 1Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
  • 2Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Kentucky 43403, USA
  • 3School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
  • 4SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
  • 5School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
  • 6e-mail: njutzl@163.com
  • 7e-mail: chenhao@jsnu.edu.cn
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    Schematic diagram of the laser experiment.

    Fig. 1. Schematic diagram of the laser experiment.

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    SEM microstructures of facture surfaces of (a) 0.05 at.% and (b) 0.1 at.%, and the mirror-polished surfaces of (c) 0.05 at.% and (d) 0.1 at.% Cr4+:YAG ceramics.

    Fig. 2. SEM microstructures of facture surfaces of (a) 0.05 at.% and (b) 0.1 at.%, and the mirror-polished surfaces of (c) 0.05 at.% and (d) 0.1 at.% Cr4+:YAG ceramics.

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    In-line transmission spectra of the uncoated Cr:YAG transparent ceramics with different Cr doping concentrations.

    Fig. 3. In-line transmission spectra of the uncoated Cr:YAG transparent ceramics with different Cr doping concentrations.

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    Laser output power as a function of the pump power for Cr:YAG materials.

    Fig. 4. Laser output power as a function of the pump power for Cr:YAG materials.

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    Passively Q-switched laser property comparisons between transparent ceramics and single crystal: (a) pulse energy versus pump power; (b) peak power versus pump power; (c) pulse width versus pump power; (d) repetition frequency versus pump power.

    Fig. 5. Passively Q-switched laser property comparisons between transparent ceramics and single crystal: (a) pulse energy versus pump power; (b) peak power versus pump power; (c) pulse width versus pump power; (d) repetition frequency versus pump power.

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    Schematic diagram of the grain boundary effect in divalent-additives-doped Cr:YAG transparent ceramics.

    Fig. 6. Schematic diagram of the grain boundary effect in divalent-additives-doped Cr:YAG transparent ceramics.

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    Yingshuang Shan, Le Zhang, Tianyuan Zhou, Cen Shao, Lei Zhang, Yuelong Ma, Qing Yao, Zhigang Jiang, Farida A. Selim, Hao Chen, "One-order-higher Cr4+ conversion efficiency in Cr4+:YAG transparent ceramics for a high-frequency passively Q-switched laser," Photonics Res. 7, 933 (2019)

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    Paper Information

    Category: Optical and Photonic Materials

    Received: Apr. 15, 2019

    Accepted: Jun. 18, 2019

    Published Online: Jul. 29, 2019

    The Author Email: Le Zhang (njutzl@163.com), Hao Chen (chenhao@jsnu.edu.cn)

    DOI:10.1364/PRJ.7.000933

    Topics

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