Title of article :
Visible luminescence in Yb3+-doped gadolinium gallium garnets
Author/Authors :
Jiang، نويسنده , , Benxue and Zhao، نويسنده , , Zhiwei and Xu، نويسنده , , Xiaodong and Song، نويسنده , , Pingxin and Wang، نويسنده , , Xiaodan and Xu، نويسنده , , Jun، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
In this paper, some results on visible luminescence performed on Yb3+-doped gadolinium gallium garnets under 165 and 940 nm excitation were presented. The upconversion luminescence was ascribed to Yb3+ cooperative luminescence and the presence of rare earth impurity ions. The gain cross-sections of Yb:GGG crystal as a function of excited-state population fraction β were studied. Emission spectra under 165 nm at 20 K showed there was no charge transfer luminescence in Yb:GGG.
Keywords :
Yb:GGG , Cooperative luminescence , Charge transfer luminescence , Yb , Cr:GGG
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
