Abstract
Trivalent erbium doped lead borate titanate aluminum fluoride (LBTAFEr) glasses of molar composition (50-x)PbO·30H3BO3·10TiO2·10AlF3·xEr2O3 were prepared and characterized applying the Judd–Ofelt theory. The visible and near infrared luminescence spectra obtained by exciting the samples at 486nm (xenon source) and 514.5nm (Ar+ laser) radiations exhibit (2H11/2, 4S3/2)→4I15/2 (547nm) and 4I13/2→4I15/2 (1.53μm) transitions, respectively. Thermalization of the two emitting 2H11/2 and 4S3/2 states is taken into account in calculating the significant radiative properties. The intensity parameters are used to calculate the transition probabilities, luminescence branching ratios, radiative decay times and emission cross-sections for the observed emission bands. The McCumber theory has been applied to evaluate the emission cross-section using the absorption cross-section of the 4I13/2→4I15/2 transition of Er3+ ion. The decay profiles of the (2H11/2, 4S3/2) emission state were recorded and analyzed.
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