Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1481619 | Journal of Non-Crystalline Solids | 2011 | 4 Pages |
Abstract
A new kind of germanate glass co-doped with Yb3+-Ho3+ was prepared. The J-O parameters were calculated to be Ω2 = (6.59 ± 0.21) Ã 10â 20 cm2, Ω4 = (2.77 ± 0.36) Ã 10â 20 cm2, and Ω6 = (1.90 ± 0.25) Ã 10â 20 cm2. The little overlap between the absorption cross section and stimulated emission cross section indicates a non-resonant energy transfer process. The calculation demonstrates that the energy transfer between Yb3+ and Ho3+ is one-phonon assisted in a great measure. The gain coefficient of Ho3+ at 2.0 μm was also calculated. The fluorescence measurement shows the Yb3+ co-doping enhances the 2.0 μm emission remarkably.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jintai Fan, Youyu Fan, Yi Yang, Danping Chen, Laurent Calveza, Xianghua Zhang, Long Zhang,