Loading...
Please wait, while we are loading the content...
Similar Documents
Optical spectroscopy of Er3+ and Yb3+ co-doped fluoroindate glasses
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ribeiro, Carlos Torres Zanatta, A. R. Nunes, Luís Artur Messaddeq, Younès Aegerter, Michel A. |
| Copyright Year | 1998 |
| Abstract | Optical absorption, Stokes, and anti-Stokes photoluminescence were performed on Er3+–Yb3+ co-doped fluoroindate glasses. For compounds prepared with a fixed 2 mol % ErF3 concentration and YbF3 contents ranging from 0 to 8 mol %, important upconversion processes were observed as a function of temperature and photon excitation energy. Based on the experimental data, two mechanisms for the upconversion (or anti-Stokes photoluminescence) processes were identified and analyzed in detail. At high Yb contents, the upconversion mechanisms are mostly determined by the population of the 2F5/2 levels of Yb3+ ions (or 4I11/2 levels of Er3+ ions, by energy transfer) regardless of the photon excitation energy and temperature of measurement. Moreover, green and red light emission have similar intensities when a large Yb3+ content is present. |
| Starting Page | 2256 |
| Ending Page | 2260 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.366965 |
| Volume Number | 83 |
| Alternate Webpage(s) | https://repositorio.unesp.br/bitstream/handle/11449/65402/2-s2.0-0032001001.pdf;jsessionid=54FF93C9299E67AC50FB9CC0DF096E63?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
