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<p>In this paper, we present a high-efficiency dual-diode-pumped Tm:LGGG disordered crystal laser using in-band pumping architecture for the first time. The room-temperature absorption and emission spectral properties of the Tm:LGGG crystal were characterized across the spectral rang of 1500–2300&#xa0;nm. A maximum output power of 11.5&#xa0;W and a slope efficiency of 57.1% concerning absorbed pump power were achieved in continuous-wave regime. Moreover, the beam quality factor M2 was estimated to be 1.9 at above output power. In the acousto-optically Q-switching regime at a repetition rate of 1&#xa0;kHz, a pulse energy of 5.71&#xa0;mJ and a pulse width of 102&#xa0;ns were achieved, resulting in a peak power of 55.98&#xa0;kW.</p>

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High power and efficient continuous-wave and acousto-optically Q-switched Tm:LGGG disordered crystal laser under in-band dual-diode-pumping

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Wensheng Zhang,
  • Linjun Li,
  • Xiaoming Duan,
  • Yuanyuan Liu,
  • Yujun Zhang,
  • Hong Liang

摘要

In this paper, we present a high-efficiency dual-diode-pumped Tm:LGGG disordered crystal laser using in-band pumping architecture for the first time. The room-temperature absorption and emission spectral properties of the Tm:LGGG crystal were characterized across the spectral rang of 1500–2300 nm. A maximum output power of 11.5 W and a slope efficiency of 57.1% concerning absorbed pump power were achieved in continuous-wave regime. Moreover, the beam quality factor M2 was estimated to be 1.9 at above output power. In the acousto-optically Q-switching regime at a repetition rate of 1 kHz, a pulse energy of 5.71 mJ and a pulse width of 102 ns were achieved, resulting in a peak power of 55.98 kW.