Optical properties of Nd3+ ions in oxyfluoride glasses and glass ceramics comparing different preparation methods
A study of optical properties of Nd31 doped oxyfluoride glasses and glass ceramics prepared by three different methods has been carried out. These methods start from NdF3 , Nd2O3 , or a Nd31 ion solution as doping agent. The alternative preparation method based on a preliminary dissolution of the Nd...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2004 |
| País: | España |
| Institución: | Universidad de La Laguna (ULL) |
| Repositorio: | RIULL. Repositorio Institucional de la Universidad de La Laguna |
| OAI Identifier: | oai:riull.ull.es:915/40822 |
| Acceso en línea: | http://riull.ull.es/xmlui/handle/915/40822 |
| Access Level: | acceso abierto |
| Palabra clave: | Nd3+ ions oxyfluoride glasses glass ceramics Optical properties |
| Sumario: | A study of optical properties of Nd31 doped oxyfluoride glasses and glass ceramics prepared by three different methods has been carried out. These methods start from NdF3 , Nd2O3 , or a Nd31 ion solution as doping agent. The alternative preparation method based on a preliminary dissolution of the Nd31 ions is proposed in order to avoid nonhomogeneous dopant distribution and spontaneous devitrification during glass elaboration. In the frame of the Judd–Ofelt theory, main radiative parameters have been studied: transition probabilities, lifetimes, and stimulated emission cross sections. Fluorescence decay curves have been also analyzed in order to study the final distribution of the Nd31 ions after the ceramming process, discerning between ions that reside in the fluoride nanocrystals precipitated during heat treatment and those remaining in the glassy phase. The NdF3 based glass ceramics present the best values for spectroscopic parameters as the stimulated cross section of the 4F3/2→4I11/2 laser transition. |
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