Laser spectroscopy of Nd3+ ions in glasses with the 0.8CaSiO3–0.2Ca3(PO4)2 eutectic composition

In this work we report the study of site-selective laser spectroscopy of Nd3+ions in glasses with the0.8CaSiO3–0.2Ca3(PO4)2eutectic composition together with a dynamic study of energy transfer amongNd3+ions by using time-resolved fluorescence line narrowing (TRFLN) spectroscopy. The spectral featuresof the time-resolved fluorescence line narrowed4F3=2!4I9=2emission spectra obtained under resonantexcitation reveal the existence of spectral migration of excitation among the Nd3+ions. The analysis ofthe time evolution of the4F3=2!4I9=2narrowed emission shows that the electronic mechanism respon-sible for the ion–ion interaction can be identified as a dipole–dipole energy transfer process.