Raman spectroscopic characterization of Er<sup>3+</sup> -doped tellurite-based glasses

Khatir, S.; Bolka, J.; Capoen, Bruno; Turrell, S.; Bouazaoui, M.

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1016/S0022-2860(01)00440-9

Titre :

Raman spectroscopic characterization of Er<sup>3+</sup> -doped tellurite-based glasses

Auteur(s) :

Khatir, S. [Auteur]
Bolka, J. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Capoen, Bruno [Auteur]

Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Turrell, S. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Bouazaoui, M. [Auteur correspondant]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la revue :

Journal of Molecular Structure

Pagination :

283-287

Éditeur :

Elsevier

Date de publication :

2001

ISSN :

0022-2860

Résumé en anglais : [en]

Er3+-doped tellurite-based glasses have been examined with the aim of determining the structural characteristics of systems with broad Er3+ emission bands. Raman spectroscopy was used for the characterization of the ...
Lire la suite >Er3+-doped tellurite-based glasses have been examined with the aim of determining the structural characteristics of systems with broad Er3+ emission bands. Raman spectroscopy was used for the characterization of the (100−x)TeO2–xZnO, and (100−x)TeO2–xPbO systems. Results show that in both cases, the addition of even small quantities of the metal oxide leads to a decrease in intensity of the ratio I(TeO4)/I(TeO3), with greater changes observed for the PbO systems. However, for higher concentrations (x>20% for ZnO and x>30% for PbO), concentrations at which these oxides behave as glass-formers, the I(TeO4)/I(TeO3) ratio becomes nearly constant, indicative of a blockage of the spatial orientation of the metal chains. The addition of a small amount of erbium ions (<1%) results in significant changes in the intensity of the low-frequency region and of the distribution of TeO3 and TeO3+1 groups in the case of PbO. Luminescence spectra of the Er3+-doped glasses show that the best luminescence properties are obtained when the TeO4 network is most intact, i.e. for low concentrations of the metallic oxide.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :