| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8163738 | Physica B: Condensed Matter | 2013 | 4 Pages |
Abstract
Violet (410Â nm, 2H9/2â4I15/2) and near-ultraviolet (380Â nm, 4G11/2â4I15/2) upconversion luminescence, were obtained for the first time in Er:Yb:La3Ga5.5Ta0.5O14 ceramic sample, synthesized by solid-state reaction, by pumping at 973Â nm. Yb3+-Er3+ energy transfer processes accounting for population of the emitting levels are discussed. The lifetime of the emitting level 2H9/2, responsible for violet luminescence, was measured and its quantum efficiency was estimated.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
S. Georgescu, A.M. Voiculescu, C. Matei, A.G. Stefan, O. Toma,