Optical spectroscopy, 1.06μm emission properties of Nd(3+)-doped phosphate based glasses.

Neodymium doped phosphate based glasses with composition of (P2O5+K2O+Al2O3+CaF2) were prepared. The samples were analysed through differential thermal analysis (DTA), Fourier transform infrared (FTIR), absorption, emission and decay measurements. Judd-Ofelt parameters (Ωλ) have been determined from the spectral intensities of absorption bands in order to calculate the radiative parameters like radiative transition probabilities (AR), radiative lifetime (τR) and branching ratios (βR) for the (4)F3/2→(4)I11/2 laser transition of Nd(3+) ion. The effective emission bandwidths (Δλeff), experimental branching ratios (βexp) and stimulated emission cross-sections (σe) have been determined from the emission spectrum. The decay curves of the (4)F3/2 level exhibited almost single exponential nature for all the Nd(3+) ion concentrations.