| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403510 | Journal of Luminescence | 2008 | 4 Pages |
Abstract
In this work, we extended the investigation on the effect of co-dopant ions in Cr:LiNbO3 to tetravalent cation such as GeO2. A singularity in the relative intensity of the 4A2â4T1 and 4A2â4T2 absorption band was observed for a concentration of â¼1.5Â mol%, compared with 4.5Â mol% for Mg2+. The photoluminescence emission spectra also reveal a new emission band, at a lower energy than the [Cr]Li centre, corresponding to this threshold concentration. A charge compensation model is proposed to explain the role of cation impurities and results are compared with those of other valence impurities.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
E. Camarillo, H. Murrieta, J.M. Hernandez, R. Zoilo, M.C. Flores, T.P.J. Han, F. Jaque,