由光纤耦合激光二极管侧面泵浦的板条 Ho:SYSO 激光器的主动调 Q 运转

Active Q-switching operation of slab Ho:SYSO laser wing-pumped by fiber coupled laser diodes.

作者信息

Duan Xiaoming, Shen Yingjie, Gao Jing, Zhu Hongbo, Qian Chuanpeng, Su Liangbi, Zheng Lihe, Li Linjun, Yao Baoquan, Dai Tongyu

出版信息

Opt Express. 2019 Apr 15;27(8):11455-11461. doi: 10.1364/OE.27.011455.

DOI:10.1364/OE.27.011455

PMID:31052989

Abstract

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.

摘要

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。