title: Stable operation of 4 mW nanoseconds radiation at 177.3 nm by second harmonic generation in KBe2BO3F2 crystals.
abstract: We report the generation of nanoseconds radiation at 177.3 nm with a maximum average power of 34.7 mW by second harmonic generation (SHG) in a 2.06-mm thick KBe(2)BO(3)F(2) (KBBF) crystal pumped with a homemade 4.2 W nanoseconds Nd: YAG laser at 355 nm operating at 10 KHz and 49 ns, which corresponds to an energy efficiency of approximately 0.826%. To our knowledge, it is the highest power generated at 177.3 nm. The dependence of phase matching angle of KBBF on temperature is presented for the first time. We also present the details on the measures for stable operation of a 4 mW nanosecond output at 177.3 nm with a lower pumping power in a thinner 1.37-mm KBBF crystal, and the stable output power is improved by about 20 times compared with previous results.
authors.affiliation: The center of laser physics and technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China. wangzmok@163.com
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Wang
authors.forename: Jing-yuan
authors.initials: JY
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Yang
authors.forename: Xiankun
authors.initials: X
authors.lastname: Cheng
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.forename: Jialin
authors.initials: J
authors.lastname: Xu
authors.forename: Yiting
authors.initials: Y
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Bo
authors.forename: Qinjun
authors.initials: Q
authors.lastname: Peng
authors.forename: Dafu
authors.initials: D
authors.lastname: Cui
authors.forename: Zuyan
authors.initials: Z
authors.lastname: Xu
authors.forename: Xiaoyang
authors.initials: X
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhu
authors.forename: Chuangtian
authors.initials: C
authors.lastname: Chen
mesh_terms: D002516:Ceramics; D017076:Computer-Aided Design; D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D036103:Nanotechnology / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity