Blue and green up-conversion in (Yb3+, Tb3+) co-doped fluorophosphate glasses
| Autor: | J.Y. Allain, Nathalie Duhamel-Henry, J.L. Adam |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Materials science
Inorganic chemistry chemistry.chemical_element Terbium Condensed Matter Physics Electronic Optical and Magnetic Materials Ion chemistry.chemical_compound chemistry Absorption band Excited state Materials Chemistry Ceramics and Composites Up conversion Luminescence Fluoride Co doped |
| Zdroj: | Journal of Non-Crystalline Solids. :245-250 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/s0022-3093(96)00667-9 |
| Popis: | Up-conversion processes are studied in (Yb 3+ , Tb 3+ ) co-doped fluorophosphate glasses. These glasses contain a large concentration of terbium fluoride, up to 36 mol%, and still luminesc. Samples are excited at 980 nm, within the Yb 3+ absorption band. For `low' Yb 3+ concentrations, i.e., below 16 mol%, the typical green luminescence of terbium is observed. With increasing Yb 3+ concentration, the green luminescence vanishes and a blue emission appears. Both emissions are due to a cooperative effect between two Yb 3+ ions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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