Optical and structural investigation on rare-earth-doped aluminophosphate glasses
| Autor: | Aurelia Meghea, Maria Giurginca, Cristiana Eugenia Ana Grigorescu, Horatiu Niciu, Mihail Elisa, Daniela Niciu, I. Cristina Vasiliu, H. J. Trodahl, M. Dalley, Bogdan Grigoras, Nicoleta Iftimie |
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| Rok vydání: | 2006 |
| Předmět: |
Absorption spectroscopy
Infrared Chemistry Organic Chemistry Inorganic chemistry Analytical chemistry Atomic and Molecular Physics and Optics Fluorescence spectroscopy Molecular electronic transition Electronic Optical and Magnetic Materials Phosphate glass Inorganic Chemistry symbols.namesake symbols Electrical and Electronic Engineering Physical and Theoretical Chemistry Raman spectroscopy Spectroscopy Visible spectrum |
| Zdroj: | Optical Materials. 28:621-625 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2005.09.030 |
| Popis: | Aluminophosphate glasses belonging to the oxide system Li 2 O–BaO–Al 2 O 3 –La 2 O 3 –P 2 O 5, un-doped and doped with rare-earth metal ions (Ce 4+ , Nd 3+ , Sm 3+ ) were obtained by a wet non-conventional method. The influence of the doping ions on the optical properties of the phosphate glasses has been investigated in relation with structural features of the vitreous matrix. The optical behavior has been studied by ultra-violet–visible–near-infra-red (UV–VIS–NIR) spectroscopy, revealing electronic transitions specific for rare-earth ions. Structural information via optical phonons was provided by infrared (IR) absorption spectra in the range 400–4000 cm −1 . Raman and fluorescence spectroscopy measurements have been performed. A strong fluorescence was observed in the visible spectrum, using 514.5 nm and 633 nm laser excitation. |
| Databáze: | OpenAIRE |
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