7.3 W of single-frequency output power at 2.09 mum from an Ho:YAG monolithic nonplanar ring laser.
Single-frequency output power of 7.3 W at 2.09 mum from a monolithic Ho:YAG nonplanar ring oscillator (NPRO) is demonstrated. Resonantly pumped by a Tm-doped fiber laser at 1.91 mum, the Ho:YAG NPRO produces 71% of slope efficiency with respect to absorbed pump power and nearly diffraction-limited output with a beam quality parameter of M(2) approximately 1.1.
Yao
Bao-Quan
BQ
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, China. Yaobq08@hit.edu.cn
Duan
Xiao-Ming
XM
Fang
Dan
D
Zhang
Yun-Jun
YJ
Ke
Liang
L
Ju
You-Lun
YL
Wang
Yue-Zhu
YZ
Zhao
Guang-Jun
GJ