J. Phys. IV France 125 (2005) 185-187
Fluorescence quantum efficiency in Nd2O3-doped aluminosilicate glasses by multiwavelength thermal lens methodN.G.C. Astrath1, J.H. Rohling1, A.C. Bento1, M.L. Baesso1, C. Jacinto2, S.M. Lima2, L.A.O. Nunes2 and T. Catunda2
1 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
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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