| Original Articles |
|
|
|
|
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 |
|
| Cite this article: |
|
WANG Guo-Nian, DAI Shi-Xun, ZHANG Jun-Jie et al 2005 Chin. Phys. Lett. 22 457-459 |
|
|
|
|
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+.
|
| Keywords:
73.43.Fj
74.25.Gz
73.61.Jc
76.30.Kg
|
|
|
Published: 01 February 2005
|
|
| PACS: |
73.43.Fj
|
(Novel experimental methods; measurements)
|
| |
74.25.Gz
|
(Optical properties)
|
| |
73.61.Jc
|
(Amorphous semiconductors; glasses)
|
| |
76.30.Kg
|
(Rare-earth ions and impurities)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
