Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10640006 | Materials Science and Engineering: B | 2005 | 4 Pages |
Abstract
The upconversion luminescence properties of Yb3+/Tm3+-codoped oxyfluoride tellurite glasses under 980 nm excitation are investigated experimentally. The intense blue and relatively weak red emissions centered at 475 and 649 nm corresponding to the transitions 1G4 â 3H6 and 1G4 â 3H4 of Tm3+, respectively, are simultaneously observed at room temperature. The effect of PbF2 on upconversion intensity is observed and discussed, and possible upconversion mechanisms are evaluated. The intense blue upconversion luminescence of Yb3+/Tm3+-codoped oxyfluoride tellurite glasses may be a potentially useful material for developing blue upconversion optical devices.
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Authors
Shiqing Xu, Dawei Fang, Zaixuan Zhang, Liyan Zhang, Shilong Zhao, Zhonghong Jiang,