1.06 pm emission of neodymium doped P2O5+Al2O3+Li2O+BaO+Gd2O3/GdF3 glasses for solid-state NIR applications

The present work focuses on the NIR emission of Nd3+ ions at 1.06 pm. Addition of fluoride content reduces the density and molar volume of the glasses. Judd-Ofelt analysis was applied to understand the absorption and emission spectra of the prepared glasses. The near-infrared emission was observed with two different excitation wavelengths at 582 nm and 805 nm. Spectroscopic quality factor found to be high for oxyfluoride glass. Luminescence intensity of oxide and oxyfluoride glass show highest at 1 mol% Nd2O3 content. Judd-Ofelt analysis were applied to understand the radiative and non-radiative transition of Nd3+ doped glasses. LomheimDeS theory was applied to predict the branching ratios of the Nd3+ doped glasses which agrees well with 4F3/2 -> 4I11/2 transition of obtained values from Judd-Ofelt theory. The quantum efficiency (q) of the 4F3/2 level for Gd2O3 doped and GdF3 doped glasses were evaluated and found that oxide glass showed more than that of fluoride content. The prepared glasses are potential candidate for solid state emitting NIR transparent material.