Switching-Concentration Effect of Li2O and Al2O3 on Phosphate Glass Doped with Nd2O3

Abstract

The purpose of this study was to determine the switching-concentration effect of Li2O and Al2O3 on phosphate glass doped with neodymium ions. The 64P2O5-20Li2O-15Al2O3-1Nd2O3 glass was measured and analyzed for density, refractive index, absorption and near-infrared emission spectrum. The density and refractive index showed values of 2.5695 g/cm3 and 1.5236, respectively. The optical absorption was measured and showed twelve bands in the range of 300–1500 nm. It was observed that the most intense transition 4I9/2→4G5/2 was centered at around 581 nm, which was chosen to investigate the near-infrared emission spectrum. The intense band of emission spectrum with 4F3/2→4I11/2 transition was shown in wavenumber at 9442.87 cm-1 (1059 nm). The Judd-Ofelt and radiative parameters were calculated and collected to support the possibility of laser application.