1. Effects of Yb concentration on the spectroscopic properties of Yb: Y3Al5O12
- Author
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Wang, Xiaodan, Xu, Xiaodong, Zeng, Xionghui, Zhao, Zhiwei, Jiang, Benxue, He, Xiaoming, and Xu, Jun
- Subjects
- *
CRYSTALS , *SEMICONDUCTOR doping , *ABSORPTION spectra , *FLUORESCENCE , *X-rays - Abstract
Abstract: Yb:YAG single crystals with Yb doping concentration 5.4, 16.3, 27.1, 53.6, and 100at.% were grown by the Czochralski process. The effects of Yb concentration on the absorption spectra (190–1100nm), fluorescence spectra under 940nm and X-ray excitation were studied. The concentration quenching of fluorescence was observed when the Yb doping concentration reaches to as high as 27.1at.% for Yb:YAG. Under 940nm excitation, the influence of the self-absorption at 969 and 1029nm on the fluorescence spectra is not evident when the Yb doping concentration is as high as 27.1at.%. However, it can greatly change the shape of fluorescence spectra of Yb:YAG when the Yb doping concentration reaches to above 53.6at.%. [Copyright &y& Elsevier]
- Published
- 2006
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