| Numéro |
J. Phys. IV France
Volume 125, June 2005
|
|
|---|---|---|
| Page(s) | 185 - 187 | |
| DOI | https://doi.org/10.1051/jp4:2005125043 | |
J. Phys. IV France 125 (2005) 185-187
DOI: 10.1051/jp4:2005125043
Fluorescence quantum efficiency in Nd2O3-doped aluminosilicate glasses by multiwavelength thermal lens method
N.G.C. Astrath1, J.H. Rohling1, A.C. Bento1, M.L. Baesso1, C. Jacinto2, S.M. Lima2, L.A.O. Nunes2 and T. Catunda21 Dep. de Física, Universidade Estadual de Maringá, CEP 87020-900, Maringá, PR, Brazil
2 Instituto de Física de São Carlos, USP, CEP 13560 - 970, São Carlos, SP, Brazil
Abstract
In this work the multiwavelength thermal lens method is applied to determine the absolute value of fluorescence quantum efficiency of low silica calcium aluminosilicate glasses doped with different concentrations of neodymium dioxide melted under vacuum condition. The experiments were performed using five different excitation wavelengths: 514, 532, 750, 810 and 890 nm. The results were in agreement with those provided by the Judd-Ofelt model.
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