A 108 W, 500 kHz Q-switching Nd:YVO4 laser with the MOPA configuration

Xingpeng Yan; Qiang Liu; Xing Fu; Yunxiang Wang; Lei Huang; Dongsheng Wang; Mali Gong

doi:10.1364/oe.16.003356

A 108 W, 500 kHz Q-switching Nd:YVO4 laser with the MOPA configuration

Opt Express. 2008 Mar 3;16(5):3356-61. doi: 10.1364/oe.16.003356.

Authors

Xingpeng Yan¹, Qiang Liu, Xing Fu, Yunxiang Wang, Lei Huang, Dongsheng Wang, Mali Gong

Affiliation

¹ Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments, Tsinghua University, Beijing 100084, China. yanxp02@mails.tsinghua.edu.cn

PMID: 18542426
DOI: 10.1364/oe.16.003356

Abstract

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).

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Amplifiers, Electronic*
Equipment Design
Equipment Failure Analysis
Lasers, Solid-State*
Lenses*
Signal Processing, Computer-Assisted / instrumentation*