title: High-power passively Q-switched Yb:YCa4O(BO3)3 laser with a GaAs crystal plate as saturable absorber.
abstract: We report on efficient high-power passively Q-switched operation of a Yb:YCa4O(BO3)3 laser with a GaAs crystal plate acting as the saturable absorber. An average output power of 5.7 W at 1032 nm is generated at a pulse repetition rate of 166.7 kHz when the incident pump power is 26.8 W, with a slope efficiency determined to be 24.5%. The averaged pulse energy achieved is roughly 30 μJ and is increased to about 40 μJ when the output coupling used changes from 30% to 50%, while the shortest pulse width is measured to be 153 ns.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Chen
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Han
authors.forename: Honghao
authors.initials: H
authors.lastname: Xu
authors.forename: Minghui
authors.initials: M
authors.lastname: Jia
authors.forename: Haohai
authors.initials: H
authors.lastname: Yu
authors.forename: Huaijin
authors.initials: H
authors.lastname: Zhang
authors.forename: Junhai
authors.initials: J
authors.lastname: Liu