This paper reports on the spectral results of Nd3+/yb3+ ions codoped 50P2Os-30ZnO-20SrO (PZS, in mol.%) glasses which were prepared by a melting technique. The glass transition temperature and spectroscopic proper...This paper reports on the spectral results of Nd3+/yb3+ ions codoped 50P2Os-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 radiative properties such as spontaneous transition probabilities (AR), radiative branching ratios (fiR) and radiative lifetimes (rR) 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/am as continuous wave laser action 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.展开更多
文摘This paper reports on the spectral results of Nd3+/yb3+ ions codoped 50P2Os-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 radiative properties such as spontaneous transition probabilities (AR), radiative branching ratios (fiR) and radiative lifetimes (rR) 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/am as continuous wave laser action 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.