Fluorescence Lifetime Increasing with F- Ions into Ytterbium-Doped Germanium--Lead--Tellurite Glasses
WANG Guo-Nian1,2, DAI Shi-Xun1, ZHANG Jun-Jie1, XU Shi-Qing1,2, HU Li-Li1, JIANG Zhong-Hong1
1Department of Laserglass, Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Graduate School of the Chinese Academy of Sciences, Beijing 100039
Fluorescence Lifetime Increasing with F- Ions into Ytterbium-Doped Germanium--Lead--Tellurite Glasses
WANG Guo-Nian1,2;DAI Shi-Xun1;ZHANG Jun-Jie1;XU Shi-Qing1,2;HU Li-Li1;JIANG Zhong-Hong1
1Department of Laserglass, Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Graduate School of the Chinese Academy of Sciences, Beijing 100039
Abstract： The effects of F- ions in a germanium--lead--tellurite glass system on the spectral and potential laser properties of the Yb3+ are investigated. The absorption spectra, lifetimes, the emission cross-sections and the minimum pump intensities of the glass system with and without F- ions have been measured and calculated. The results show that the fluorescence lifetime and the minimum pump intensity of Yb3+ ions increase evidently, which indicates that germanium--lead--oxyfluoride tellurite glass is a promising laser host matrix for high power generation. FT-IR spectra were used to analyse the effect of F- ions on OH- groups in this glass system. Analysis demonstrates that addition of fluoride removes the OH- groups and results in improvement of fluorescence lifetime of Yb3+.
2005, Vol. 22 
