Duan Xiaoming, Shen Yingjie, Gao Jing, Zhu Hongbo, Qian Chuanpeng, Su Liangbi, Zheng Lihe, Li Linjun, Yao Baoquan, Dai Tongyu
Opt Express. 2019 Apr 15;27(8):11455-11461. doi: 10.1364/OE.27.011455.
In this paper, we demonstrate the continuous-wave and acousto-optical Q-switched performance of diode-pumped slab Ho:(ScY)SiO (Ho:SYSO) laser at 2.1 µm for the first time. Two 1.91-µm laser diodes were used to pump the Ho:SYSO crystal. With a wing-pumping structure, at absorbed pump power of 44.7 W, the continuous wave slab Ho:SYSO laser produced 20.7 W maximum output power at 2097.9 nm, resulting in a slope efficiency of 53.1% with respect to the absorbed pump power. In the Q-switched regime, the slab Ho:SYSO laser produced up to 3.4 mJ pulse energy with 20 ns minimum pulse width at pulse repetition frequency of 5 kHz, corresponding to a peak power of 170 kW.
在本文中，我们首次展示了二极管泵浦板条Ho:(ScY)SiO（Ho:SYSO）激光器在2.1 µm波长下的连续波和声光调Q性能。使用两个1.91 µm的激光二极管泵浦Ho:SYSO晶体。采用翼形泵浦结构，在吸收泵浦功率为44.7 W时，连续波板条Ho:SYSO激光器在2097.9 nm波长处产生了20.7 W的最大输出功率，相对于吸收泵浦功率的斜率效率为53.1%。在调Q模式下，板条Ho:SYSO激光器在5 kHz的脉冲重复频率下产生了高达3.4 mJ的脉冲能量，最小脉冲宽度为20 ns，对应峰值功率为170 kW。
