title: Performances of a diode end-pumped GYSGG/Er,Pr:GYSGG composite laser crystal operated at 2.79 μm.
abstract: We demonstrate a comparative investigation on Er,Pr:GYSGG and GYSGG/Er,Pr:GYSGG composite crystals at 2.79 μm. Simulating results show the highest temperatures are 369 K and 318 K, respectively. A maximum output power of 825 mW with slope efficiency of 19.2% and maximum laser energy of 3.65 mJ with slope efficiency of 22.7% are obtained in the GYSGG/Er,Pr:GYSGG composite crystal, which have an obvious improvement than those of Er,Pr:GYSGG crystal. The thermal focal lengths are respectively 41 and 62 mm when the pump power is 2.5 W. All these results indicate that the GYSGG/Er,Pr:GYSGG composite crystal has great advantages in reducing the influence of thermal effects and improving laser performances.
authors.forename: Jiakang
authors.initials: J
authors.lastname: Chen
authors.forename: Dunlu
authors.initials: D
authors.lastname: Sun
authors.forename: Jianqiao
authors.initials: J
authors.lastname: Luo
authors.forename: Huili
authors.initials: H
authors.lastname: Zhang
authors.forename: Shihao
authors.initials: S
authors.lastname: Cao
authors.forename: Jingzhong
authors.initials: J
authors.lastname: Xiao
authors.forename: Hongxiang
authors.initials: H
authors.lastname: Kang
authors.forename: Qingli
authors.initials: Q
authors.lastname: Zhang
authors.forename: Shaotang
authors.initials: S
authors.lastname: Yin