Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442896 | Optical Materials | 2017 | 7 Pages |
Abstract
The Tm3+/Ho3+ co-doped germanate-tellurite glasses with good thermal properties were prepared. A flat emission with full width at half maximum (FWHM) = 373 nm at â¼2 μm was observed in the prepared glass upon the 808 nm excitation. Besides, the cross-sections of the prepared glass have been calculated, and the relative small peak absorption cross-sections (Ïabs) corresponding to the Ho3+: 5I7 â 5I8 is the factor to obtain the flat emission. Moreover, the energy transfer microscopic parameters (CDA) between RE3+ ions have been investigated and quantitatively explained the observation of the flat and broadband emission. Furthermore, when P = 0.2, the gain coefficient becomes positive which indicates the prepared glasses possess superior gain ability. The results indicate that the prepared glasses could be promising candidate for â¼2 μm tunable or ultrashort pulse laser materials.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Lingling Shen, Muzhi Cai, Yu Lu, Ning Wang, Feifei Huang, Shiqing Xu, Junjie Zhang,