title: High-power and high-quality, green-beam generation by employing a thermally near-unstable resonator design.
abstract: We have obtained green-beam quality of M2 = 6.2 at an average output power of 120 W by intracavity frequency doubling of a diode-side-pumped, Q-switched Nd:YAG rod laser with a repetition rate of 10 kHz and an optical-to-optical conversion efficiency of 15.2%. To achieve high-beam quality at high average power, the laser employs a thermally near-unstable resonator design with two-rod birefringence compensation in an L-shaped flat-flat cavity. The output power fluctuation of the green laser remains less than 0.9% in 4 h.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, China. boyong@aphy.iphy.ac.cn
authors.forename: Yong
authors.initials: Y
authors.lastname: Bo
authors.forename: Aicong
authors.initials: A
authors.lastname: Geng
authors.forename: Yong
authors.initials: Y
authors.lastname: Bi
authors.forename: Zhipei
authors.initials: Z
authors.lastname: Sun
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yang
authors.forename: Qinjun
authors.initials: Q
authors.lastname: Peng
authors.forename: Huiqing
authors.initials: H
authors.lastname: Li
authors.forename: Ruining
authors.initials: R
authors.lastname: Li
authors.forename: Dafu
authors.initials: D
authors.lastname: Cui
authors.forename: Zuyan
authors.initials: Z
authors.lastname: Xu