title: High power, tunable mid-infrared BaGa4Se7optical parametric oscillator pumped by a 2.1 μm Ho:YAG laser.
abstract: We, for the first time, demonstrate a tunable mid-infrared BaGa4Se7-based optical parametric oscillator pumped by a acousto-optical Q-switched Ho:YAG laser at 2090.6 nm. Up to 1.55 W of average power was generated in the 3-5 μm range, corresponding to an optical-to-optical conversion efficiency of 14.4% and a slope efficiency of 19.9%. The mid-IR radiation spectra were also seriously researched at different phase-matched angles. The tunable range was 3.49-4.13 μm for the signal, and 5.19-4.34 μm for the idler.
authors.forename: Jin-He
authors.initials: JH
authors.lastname: Yuan
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.forename: Bao-Quan
authors.initials: BQ
authors.lastname: Yao
authors.forename: Ji-Yong
authors.initials: JY
authors.lastname: Yao
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Duan
authors.forename: Ying-Yi
authors.initials: YY
authors.lastname: Li
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Shen
authors.forename: Yi-Cheng
authors.initials: YC
authors.lastname: Wu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Cui
authors.forename: Tong-Yu
authors.initials: TY
authors.lastname: Dai