1. Effects of gamma-irradiation and air annealing on Yb-doped Y3Al5O12 single crystal
- Author
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Zeng, Xionghui, Xu, Xiaodong, Wang, Xiaodan, Zhao, Zhiwei, Zhao, Guangjun, and Xu, Jun
- Subjects
- *
GAMMA rays , *ELECTROMAGNETIC waves , *IRRADIATION , *RADIATION , *ANNEALING of metals , *YTTERBIUM - Abstract
Abstract: The effects of gamma-irradiation on the air-annealed 10at.% Yb:Y3Al5O12 (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 Fe3+ and Yb3+ were lightly increased. For the first time, the gamma-irradiation induced valence changes between Yb3+ and Yb2+ ions in Yb:YAG crystals have been observed. [Copyright &y& Elsevier]
- Published
- 2008
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