Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/72121
Type: Artigo de periódico
Title: Spectroscopic properties of water free Nd2O3-doped low silica calcium aluminosilicate glasses
Author: Pecoraro, E
Sampaio, JA
Nunes, LAO
Gama, S
Baesso, ML
Abstract: In this work, low silica calcium aluminosilicate glasses (LSCA) doped with different concentrations of Nd2O3 were prepared under vacuum conditions and investigated through spectroscopic measurements. UV, visible and near IR optical absorption spectra, IR luminescence spectra, and fluorescent time decay were measured. Judd-Ofelt model was used in conjunction with these data to calculate intensity parameters (Omega (2), Omega (4) and Omega (6)), emission cross-section, radiative lifetime, branching ratio and fluorescence quantum efficiency. The up-conversion properties of Nd3+ were investigated following ((4)G(5/2) + (2)G(7/2)) excitation, and both visible and UV up-conversion have been observed. These results combined with its high fluorescence quantum efficiency and excellent mechanical properties, suggest that this glass may be a candidate to be used as laser host material for near IR with a further possibility of application in the UV and visible spectral regions. (C) 2000 Elsevier Science B.V. All rights reserved.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0022-3093(00)00316-1
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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