Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Heavy metal oxide glass-ceramics containing luminescent gallium-garnets single crystals for photonic applications

Abstract : Glass-ceramics containing rare earth gallium garnets were obtained using glass compositions as reactional medium. This work reports on the synthesis, and structural, morphological, and optical characterizations of Er3+ and Tm3+-doped Yb3Ga5O12 crystals prepared from controlled cooling of heavy metal oxide glass melts. Micrometric cubic crystals were obtained by controlling the cooling of a rare earth-supersaturated glassy composition melted at high temperature. Crystals with sizes ranging between 5 and 150 µm were formed into the glass matrix. A gallium garnet phase corresponding to space group Ia-3d was identified by X-ray diffraction and confirmed by Rietveld simulations. The morphology of crystals was studied by optical and scanning electron microscopies, while chemical elements were mapped by electron dispersive X-Ray spectroscopy. The glass phase was studied by XRD, thermal analysis and Raman spectroscopy. The optical properties of both glass and glass-ceramic materials were evaluated by UV–Vis and luminescence spectroscopies. Micro-luminescence measurements confirmed that rare earths were incorporated into the crystalline phase. Intense upconversion emissions of Er3+ (550 and 660 nm) and Tm3+ (800 nm) were observed when the glass-ceramics were pumped at 980 nm. These new glass-ceramics are excellent candidates for the development of photonic devices.
Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-03142830
Contributeur : Stéphane Toulin <>
Soumis le : mardi 16 février 2021 - 15:56:50
Dernière modification le : jeudi 18 février 2021 - 11:37:23

Fichier

 Accès restreint
Fichier visible le : 2022-01-19

Connectez-vous pour demander l'accès au fichier

Identifiants

Collections

Citation

A. E. Souza, S. Antonio, Sidney Ribeiro, Douglas Faza Franco, Gustavo Galeani, et al.. Heavy metal oxide glass-ceramics containing luminescent gallium-garnets single crystals for photonic applications. Journal of Alloys and Compounds, Elsevier, 2021, 864, pp.158804. ⟨10.1016/j.jallcom.2021.158804⟩. ⟨hal-03142830⟩

Partager

Métriques

Consultations de la notice

117