Abstract
The optical properties of trivalent neodymium embedded in a P2O5-Al2O3-Na2O-K2O phosphate glass system, synthesized by the fusion method, are studied. Ab- sorption, luminescence, lifetime, and Raman spectroscopy measurements were performed and the Judd-Ofelt theory was applied to determine optical parameters such as the quantum efficiency and the stimulated emissioncross section of the Nd 3+ -doped glass system. This structure has high quantum efficiency at low Nd 3+ concentrations, comparable to the efficiency of a commercial YAG:Nd 3+ crystal. We discuss the mechanisms responsible for the high quantum efficiency observed in the proposed phosphate glass system.
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