Article ID Journal Published Year Pages File Type
10640006 Materials Science and Engineering: B 2005 4 Pages PDF
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 → 3H6 and 1G4 → 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.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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