title: 103 W in-band dual-end-pumped Ho:YAG laser.
abstract: An efficient 2 μm in-band pumped Ho:YAG laser was demonstrated. The resonator involves two Ho:YAG crystals, each of which was dual-end-pumped by two orthogonally polarized diode-pumped Tm:YLF lasers. The maximum continuous wave output power of 103 W was achieved, corresponding to a slope efficiency of 67.8% with respect to the incident pump power and an optical-to-optical conversion efficiency of 63.5%. Under Q-switched mode, we obtained 101 W laser output at 30 kHz, corresponding to a slope efficiency of 66.2%. The beam quality or M2 factor was found to be less than 2.
authors.affiliation: National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 15001, China.
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Shen
authors.forename: Bao-Quan
authors.initials: BQ
authors.lastname: Yao
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Duan
authors.forename: Guo-Li
authors.initials: GL
authors.lastname: Zhu
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: You-Lun
authors.initials: YL
authors.lastname: Ju
authors.forename: Yue-Zhu
authors.initials: YZ
authors.lastname: Wang
mesh_terms: D053844:Lasers, Solid-State; D013057:Spectrum Analysis