title: Effects of gamma-irradiation and air annealing on Yb-doped Y3Al5O12 single crystal.
abstract: The effects of gamma-irradiation on the air-annealed 10at.% Yb:Y(3)Al(5)O(12) (YAG) and air annealing on the gamma-irradiated 10at.% Yb:YAG have been studied by the difference absorption spectra before and after treatment. The gamma-irradiation and air annealing led to opposite changes of the absorption properties of the Yb:YAG crystal. After air annealing, the gamma-irradiation induced centers were totally removed and the concentration of Fe(3+) and Yb(3+) were lightly increased. For the first time, the gamma-irradiation induced valence changes between Yb(3+) and Yb(2+) ions in Yb:YAG crystals have been observed.
authors.affiliation: Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, People's Republic of China. zeng19762002@yahoo.com.cn
authors.forename: Xionghui
authors.initials: X
authors.lastname: Zeng
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Xu
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Wang
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Zhao
authors.forename: Guangjun
authors.initials: G
authors.lastname: Zhao
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
mesh_terms: D000388:Air; D000535:Aluminum / Q000737:chemistry*; D005720:Gamma Rays; D013057:Spectrum Analysis; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: C503779:yttrium-aluminum-garnet; D015019:Yttrium; D000535:Aluminum; D015018:Ytterbium