A 108 W, 500 kHz Q-switching Nd:YVO4 laser with the MOPA configuration.
A high power, dual-end-pumped Nd:YVO(4) laser with a MOPA configuration was stably Q-switched at repetition rate up to 500 kHz. The thermally bonded Nd:YVO(4) crystal was used in our experiment. In acousto-optically Q-switching operation at repetition rate of 500 kHz, 35 W average power was produced by the oscillator, with optical-optical efficiency of 41.7%. 108 W average power was obtained by a master oscillator power amplifier (MOPA) configuration including two amplifier stages, corresponding to the total optical-optical efficiency of 42.2%. The pulse duration was 48 ns, with a stability of pulse peak value < 2.5%. The beam quality was better than two-times diffraction-limit (M(x)(2) = 1.99, M(y)(2) = 1.76).
Yan
Xingpeng
X
Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments, Tsinghua University, Beijing 100084, China. yanxp02@mails.tsinghua.edu.cn
Liu
Qiang
Q
Fu
Xing
X
Wang
Yunxiang
Y
Huang
Lei
L
Wang
Dongsheng
D
Gong
Mali
M
D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D007909:Lenses; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*