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<p>In this paper, a V<sub>2</sub>GeC saturable absorber (SA) is prepared and used to modulate a Tm:YAP laser. In continuous wave (CW) mode, an output power of 2.48 W at 1940.5&#xa0;nm was achieved with a 15.39 W pump power, corresponding to an optical–optical conversion efficiency of 16.1%. Under passively Q-switched (PQS) mode, an average output power of 663 mW at 1937.4&#xa0;nm was acquired with an optical–optical conversion efficiency of 4.3%, and a pulse width of 416.7&#xa0;ns at 129.00&#xa0;kHz was acquired in the laser stable operation, corresponding to a per pulse energy of 5.1&#xa0;µJ. These experimental results demonstrate the effective modulation capabilities of the V<sub>2</sub>GeC SA in near-infrared laser systems.</p>

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Passively Q-switched Tm:YAP laser with a V₂GeC saturable absorber

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Haipeng Li,
  • Qiong Gao,
  • Xinzhi Ma,
  • Xiurong Qu,
  • Linjun Li

摘要

In this paper, a V2GeC saturable absorber (SA) is prepared and used to modulate a Tm:YAP laser. In continuous wave (CW) mode, an output power of 2.48 W at 1940.5 nm was achieved with a 15.39 W pump power, corresponding to an optical–optical conversion efficiency of 16.1%. Under passively Q-switched (PQS) mode, an average output power of 663 mW at 1937.4 nm was acquired with an optical–optical conversion efficiency of 4.3%, and a pulse width of 416.7 ns at 129.00 kHz was acquired in the laser stable operation, corresponding to a per pulse energy of 5.1 µJ. These experimental results demonstrate the effective modulation capabilities of the V2GeC SA in near-infrared laser systems.