Spectroscopic studies of emission and absorption properties of 38PbO-62SiO2:Nd3+ glass

The main spectroscopic parameters (intensity parameters, radiative life times, branching ratios, quantum efficiency and emission cross-section of the 4F3/2→4I9/2 transition) of the 38PbO-62SiO2 glass doped with Nd3+ are evaluated using the standard Judd-Ofelt theory. Remarkably low values of the intensity parameters Ω2,4,6 are explained by structural modifications of the Nd3+ surroundings caused by presence of the Pb ions.