We present a diode-pumped, electro-optically Q-switched Tm:YAG laser with a cryogenically cooled laser crystal at 120 K. Output pulses of up to 2.55 mJ and 650 ns duration were demonstrated in an actively Q-switched configuration with a repetition rate of 1 Hz. By using cavity dumping the pulse duration was shortened to 18 ns with only a slightly lower output energy of 2.22 mJ. Furthermore, using a simplified rate equation model, we discuss design constraints on the pump fluence in a pulse pump approach for Tm:YAG to maximize the energy storage capability at a given pump power.

中文翻译：

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二极管泵浦、电光 Q 开关、低温 Tm:YAG 激光器，工作波长为 1.88 μm

我们提出了一个二极管泵浦，电光问-开关 Tm:YAG 激光器，具有 120 K 的低温冷却激光晶体。输出脉冲高达 2.55 mJ，持续时间为 650 ns。问- 重复频率为 1 Hz 的开关配置。通过使用腔倾倒，脉冲持续时间缩短至 18 ns，输出能量仅为 2.22 mJ 略低。此外，使用简化的速率方程模型，我们讨论了 Tm:YAG 脉冲泵方法中泵通量的设计约束，以在给定泵功率下最大化能量存储能力。