Spectra properties of Nd3+ ion doped B2O3-Nb2O5-BaO-La2O3 glass

The Nd3+ doped 2% 40B2O3-(15-χ)Nb2O5-45BaO-χLa2O3(χ=10, 7.5, 5, 2.5, molar percent) glass was prepared by melting method. The absorption, emission spectra and DTA curves of the glass were measured. The Judd-Ofelt parameters were calculated from their emission spectra. Various spectroscopic parameters, such as the radiative transition probabilities, total radiative transition probability, radiative lifetime, branching ratios and the stimulated emission cross-sections between the metastable 4F3/2 and terminal 4I11/2 were obtained with the help of J-O parameters. The result showed that with the increase of Nb2O5 and decrease of La2O3 content, the intensity parameters Ω2 and the thermal stability increased, while the intensity parameters Ω6 and the stimulated emission cross-sections decre