title: Spectroscopic, diode-pumped laser properties and gamma irradiation effect on Yb, Er, Ho:GYSGG crystals.
abstract: We demonstrate a diode end-pumped Yb, Er, Ho:Gd(1.17)Y(1.83)Sc(2)Ga(3)O(12) (GYSGG) laser operated at 2.79 μm in continuous-wave mode. Spectral analysis shows that Yb(3+) and Ho(3+) act as sensitizer and deactivator ions, respectively. Pumping with a 967 nm laser diode produces the maximum output power of 411 mW, corresponding to optical-optical conversion and slope efficiencies of 11.6% and 13.1%, respectively. The minimum laser threshold is only 81 mW because of Ho(3+) doping. The laser properties are only slightly influenced by 100 mrad gamma irradiation. The Yb, Er, Ho:GYSGG crystal possesses excellent radiation resistance and is a potential laser gain medium in radiant environments.
authors.affiliation: The Key Laboratory of Photonic Devices and Materials, Anhui Province, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China.
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: Jingzhong
authors.initials: J
authors.lastname: Xiao
authors.forename: Hongxiang
authors.initials: H
authors.lastname: Kang
authors.forename: Huili
authors.initials: H
authors.lastname: Zhang
authors.forename: Maojie
authors.initials: M
authors.lastname: Cheng
authors.forename: Qingli
authors.initials: Q
authors.lastname: Zhang
authors.forename: Shaotang
authors.initials: S
authors.lastname: Yin
mesh_terms: D004871:Erbium / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D005720:Gamma Rays; D006695:Holmium / Q000737:chemistry*; D053844:Lasers, Solid-State; D010087:Oxides / Q000737:chemistry*; D012538:Scandium / Q000737:chemistry*; D013057:Spectrum Analysis; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D010087:Oxides; D015019:Yttrium; D004871:Erbium; D005682:Gadolinium; D015018:Ytterbium; D006695:Holmium; D012538:Scandium