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1 results

  • LD-pumped gas-cooled multislab Nd:glass laser amplification to joule level

  • Part of
  • Wenfa Huang, Jiangfeng Wang, Xinghua Lu, Tingrui Huang, Jiangtao Guo, Wei Fan, Xuechun Li
  • Journal:
    High Power Laser Science and Engineering / Volume 6 / 2018
    Published online by Cambridge University Press:
    22 April 2018, e15
    • Article
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  • We demonstrate a laser diode end-pumped helium gas-cooled multislab Nd:glass laser amplifier. The design and thermal management of the proposed laser amplifier are discussed. The thermally induced wavefront aberration of the slabs was also measured and compared with simulation results. A small-signal single-pass longitudinal gain of 1.8 was measured with a pump energy of 7.3 J. With an injected seed energy of 0.6 mJ, the output energy from the amplifier reached 0.5 J at 0.2 Hz and 0.43 J at 0.5 Hz in a multipass extraction geometry, thus demonstrating the feasibility of diode-pumped, high-energy lasers with direct gas cooling.