材料期刊网

This paper reports on the spectral results of Nd3+/Yb3+ ions codoped 50P2O5-30ZnO-20SrO (PZS, in mol.%) glasses which were prepared by a melting technique. The glass transition temperature and spectroscopic properties of these glasses were estimated. From the absorption spectra, Judd-Ofelt (J-O) intensity parameters (Ωk), were calculated. Using J-O intensity parameters, several ra-diative properties such as spontaneous transition probabilities (AR), radiative branching ratios (βR) and radiative lifetimes (τR) were determined for the exciting levels of the Nd3+ ions. The large value of the stimulated integrated cross-section and the lifetimes of Nd3+ level revealed the potential of the present glasses as a candidate for generating laser emission at 1.06 μm as continuous wave laser ac-tion and exploited for optical device fabrication. A broad emission band from 950 to 1100 nm was detected when the Nd3+/Yb3+ was co-doped in PZS glasses excited by 805 nm lighting diode (LD). The energy transfer process from Nd3+→Yb3+ in co-doped phos-phate glasses was described in this paper.