Stokes and anti-Stokes luminescence of Er3+ doped Ga 10Ge25S65 glass excited at 980 and 532 nm

Abstract

We report on photoluminescence (PL) properties of Er3+ doped Ga10Ge25S65 glass. Experiments were performed using 5 ns laser pulses at 980 nm (532 nm), in resonance with the I4 15/2 → I4 11/2 (I4 15/2 → H2 11/2) transition of the Er3+ ions. PL bands were observed from the blue to the near-infrared and the dependence of their intensity as a function of the laser intensity was analyzed. The PL temporal behavior was analyzed through rate equations for the population densities and using the Inokuti-Hirayama model. The results allowed identification of the PL pathways and the characterization of energy transfer processes involving pairs of ions. © 2010 American Institute of Physics.