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<p>A Ho:YAG amplifier in-band pumped by a home-built high power and narrow-linewidth thulium-doped fiber laser (TDFL) at 1907.5&#xa0;nm is demonstrated. Using a single-end-pumped configuration with the TDFL, a maximum output power of 135&#xa0;W is achieved at 2090.48&#xa0;nm of the Ho:YAG amplifier. The amplifier delivers a maximum pulse energy of 67.5&#xa0;mJ with a pulse width of 30 ns at a repetition rate of 2&#xa0;kHz, corresponding to a peak power of 2.25&#xa0;MW. The slope efficiency relative to the absorbed pump power reaches 61.9%.</p>

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A high-energy Ho:YAG amplifier pumped by a 1907 nm Tm-doped fiber laser

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Zhenxing He,
  • Ting Yu,
  • Junjie Ren,
  • Jing Liu,
  • Ke Yang,
  • Xisheng Ye

摘要

A Ho:YAG amplifier in-band pumped by a home-built high power and narrow-linewidth thulium-doped fiber laser (TDFL) at 1907.5 nm is demonstrated. Using a single-end-pumped configuration with the TDFL, a maximum output power of 135 W is achieved at 2090.48 nm of the Ho:YAG amplifier. The amplifier delivers a maximum pulse energy of 67.5 mJ with a pulse width of 30 ns at a repetition rate of 2 kHz, corresponding to a peak power of 2.25 MW. The slope efficiency relative to the absorbed pump power reaches 61.9%.