Effects of gamma irradiation and air annealing on Yb-doped YAlO3single crystals

✍ Scribed by Zeng, Xionghui ;Zhao, Guangjun ;Xu, Jun ;Li, Hongjun ;He, Xiaoming

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 113 KB
• Volume: 202
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200420024

✦ Synopsis

Abstract

The effects of gamma irradiation on as‐grown 5 at% Yb:YAlO~3~ (YAP) and air annealing on gamma‐irradiated 5 at% Yb:YAP have been studied by the difference in the absorption spectra before and after treatment. The gamma irradiation and air annealing led to opposite changes of the absorption properties of the Yb:YAP crystal. After air annealing, the gamma‐irradiation effects were totally removed over the wavelength range 390–800 nm and the concentrations of Fe^3+^ and Yb^3+^ were slightly increased. For the first time, the gamma‐irradiation‐induced valence changes between Yb^3+^ and Yb^2+^ ions in Yb:YAP crystals have been observed. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)