Influence of the oxygen-affected sites on decay times in Pr3+-activated fluoroaluminate glass

We demonstrate how the existence of the oxygen-affected sites in the glass matrix of the Pr3+-activated fluoroaluminate glass reflects the unusual decay time dependence on the emission wavelength. The previously proposed model of the “defect state” has been redefined, developed and used to describe the wavelength dependence of the emission decays of three different emission bands. The model allows reasonably good fits to the experimental data.