title: High average power third harmonic generation at 355 nm with K3B6O10Br crystal.
abstract: We demonstrate a nanosecond 355 nm laser by third harmonic generation of an Nd: YAG laser with a 4 × 4 × 13.3 mm3type I cut K3B6O10Br crystal for the first time. The maximum average power of 19.3 W is achieved with the corresponding conversion efficiency of 16.3% and the maximum conversion efficiency of 18.3% is recorded when the 355 nm average power is 15.8W. In addition, several nonlinear optical parameters including the angle and temperature bandwidths at third harmonic generation are also investigated.
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.forename: Zhanyu
authors.initials: Z
authors.lastname: Hou
authors.forename: Mingjun
authors.initials: M
authors.lastname: Xia
authors.forename: Lijuan
authors.initials: L
authors.lastname: Liu
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Wang
authors.forename: Rukang
authors.initials: R
authors.lastname: Li
authors.forename: Chuangtian
authors.initials: C
authors.lastname: Chen