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Chinese Journal of Lasers, Volume. 50, Issue 2, 0201009(2023)

High-Power Planar Waveguide Picosecond Laser Amplifier

Jinchuan Wang1,2,3, Ping He1,2、*, Haixia Cao1,2, Dan Wang1,2, Juntao Wang1,2, Tangjian Zhou1,2, Jianli Shang1,2, and Qingsong Gao1,2
Author Affiliations
  • 1Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 612900, Sichuan , China
  • 2Key Laboratory of Science and Technology on High Energy Laser, China Academy of Engineering Physics,Mianyang 612900, Sichuan , China
  • 3Graduate School, China Academy of Engineering Physics, Beijing 100088, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (18)
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    Figures & Tables(11)
    Structural diagram of planar waveguide

    Fig. 1. Structural diagram of planar waveguide

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    Schematic of 1064 nm fiber-planar waveguide picosecond laser

    Fig. 2. Schematic of 1064 nm fiber-planar waveguide picosecond laser

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    Pulse-width curves of seed laser

    Fig. 3. Pulse-width curves of seed laser

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    Absorbed pump power densities at different positions in gain zone

    Fig. 4. Absorbed pump power densities at different positions in gain zone

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    Output powers at different positions in gain zone

    Fig. 5. Output powers at different positions in gain zone

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    Output power versus pump power

    Fig. 6. Output power versus pump power

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    Output beam quality with average output power of 228 W

    Fig. 7. Output beam quality with average output power of 228 W

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    Output powers of seed lasers at different repetition frequencies

    Fig. 8. Output powers of seed lasers at different repetition frequencies

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    Output characteristic curves of laser amplifier system. (a) Theoretical output powers at different input seed powers; (b) theoretical extraction efficiencies at different input seed powers; (c) theoretical optical-optical conversion efficiency versus power of seed laser

    Fig. 9. Output characteristic curves of laser amplifier system. (a) Theoretical output powers at different input seed powers; (b) theoretical extraction efficiencies at different input seed powers; (c) theoretical optical-optical conversion efficiency versus power of seed laser

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    Output characteristic curves under dual-end pump. (a) Absorbed pump power density versus position; (b) output power

    Fig. 10. Output characteristic curves under dual-end pump. (a) Absorbed pump power density versus position; (b) output power

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    • Table 1. Output results under different seed laser repetition frequencies

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      Table 1. Output results under different seed laser repetition frequencies

      Repetition

      frequency /kHz

      Input power /

      mW

      		Input single-pulse energy /nJOutput single-pulse energy /μJOptical-optical conversion efficiency /%

      Magnification

      factor

      2.446×10448019.89.320.2475
      4.89×1039619.832.714.11.7×103
      2.038×1034019.864.111.63.3×103
      1.019×1032019.8106.29.65.4×103
      5009.819.81657.31.1×104
      2003.919.8292.55.21.5×104
      99.4219.8430.63.82.2×104
      49.80.9719.8634.52.33.2×104
      250.4919.89682.24.9×104
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    Jinchuan Wang, Ping He, Haixia Cao, Dan Wang, Juntao Wang, Tangjian Zhou, Jianli Shang, Qingsong Gao. High-Power Planar Waveguide Picosecond Laser Amplifier[J]. Chinese Journal of Lasers, 2023, 50(2): 0201009

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    Paper Information

    Category: laser devices and laser physics

    Received: Mar. 9, 2022

    Accepted: May. 7, 2022

    Published Online: Feb. 7, 2023

    The Author Email: He Ping (peacke@163.com)

    DOI:10.3788/CJL220649

    Topics

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