Continuous-wave and Q-switched operation of a resonantly pumped Ho:YAlO3 laser.
We demonstrated continuous-wave (CW) and Q-switched operation of a room-temperature Ho:YAlO(3) laser that is resonantly end-pumped by a diode-pumped Tm:YLF laser at 1.91 microm. The CW Ho:YAlO(3) laser generated 5.5 W of linearly polarized (EII c ) output at 2118 nm with beam quality factor of M(2) approximately 1.1 for an incident pump power of 13.8 W, corresponding to optical-to-optical conversion efficiency of 40%. Up to 1- mJ energy per pulse at pulse repetition frequency (PRF) of 5 kHz, and the maximum average power of 5.3-W with FWHM pulse duration of 30.5 ns at 20 kHz were achieved in Q-switched mode.
Yao
Bao-Quan
BQ
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China. Yaobq08@hit.edu.cn
Duan
Xiao-Ming
XM
Zheng
Liang-Liang
LL
Ju
You-Lun
YL
Wang
Yue-Zhu
YZ
Zhao
Guang-Jun
GJ
Dong
Qin
Q
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D008962:Models, Theoretical; D009991:Oscillometry / Q000295:instrumentation*; D014732:Vibration