In this paper, an efficient electro-optical Q-switched performance of a 0.5% Ho:YLF laser pumped by a Tm: fiber laser at single-pass and double-pass configurations was studied. Efficient performance was achieved with double-pass pumping; therefore, in a continuous-wave operation, a maximum output power of 19.5 W at 2056.85 nm was extracted, corresponding to optical-to-optical efficiency of 27%. The measured output characteristics for the U-shape concave–concave resonator confirm LASCAD simulation results. In the Q-switched performance, the output energy of 60 mJ was achieved at a 10 Hz repetition rate. The pulse duration of 24.5 ns corresponding to 2.45 MW peak power was recorded. Optical-to-optical efficiency was 5.16%, and 26.6% Q-switched-to-free running modes conversion efficiency was obtained. A slope of 0.2 mJ/°C was recorded for change in the cooling temperature. The energy instability during 5 min was 1.08%. The average M² factor for x and y directions was measured at 1.56.

在本文中，研究了由 Tm: 光纤激光器在单程和双程配置下泵浦的 0.5% Ho:YLF 激光器的高效电光 Q 开关性能。双程泵送实现了高效性能；因此，在连续波操作中，在 2056.85 nm 处提取的最大输出功率为 19.5 W，对应于 27% 的光对光效率。U 形凹凹谐振器的测量输出特性证实了 LASCAD 模拟结果。在 Q 开关性能中，60 mJ 的输出能量是在 10 Hz 重复频率下实现的。记录了对应于 2.45 MW 峰值功率的 24.5 ns 的脉冲持续时间。光对光效率为5.16%，Q-switched-to-free running模式转换效率为26.6%。斜率为 0。冷却温度的变化记录为 2 mJ/°C。5 分钟内的能量不稳定性为 1.08%。平均值x和y方向的M ²因子测得为 1.56。