摘要
By measuring the emission spectra and the fluorescence lifetime of the ^4I13/2 state of Er^3＋ ions in Gd2SiO5 crystal at different temperatures, the effects of temperature on the spectra and the lifetime of the ^4I13/2 state are investigated. When the temperature increases, the emission line width for the ^4I13/2 →^4I15/2 transition is broadened, and the main emission lines at 1 596, 1 609, and 1 644 nm shifte toward shorter wavelengths. The measured lifetime of the ^4I13/2 state decreases from 13.2 to 8.4 ms with temperature increase from 13 to 300 K, which is mainly due to the temperature dependence of multiphonon relaxation between the ^4I13/2 and ^4I15/2 states and the changing population distribution among the Stark levels within the ^4I13/2 state. The experimental results imply that low temperature condition is better for the -l.6μm laser output.
By measuring the emission spectra and the fluorescence lifetime of the ^4I13/2 state of Er^3＋ ions in Gd2SiO5 crystal at different temperatures, the effects of temperature on the spectra and the lifetime of the ^4I13/2 state are investigated. When the temperature increases, the emission line width for the ^4I13/2 →^4I15/2 transition is broadened, and the main emission lines at 1 596, 1 609, and 1 644 nm shifte toward shorter wavelengths. The measured lifetime of the ^4I13/2 state decreases from 13.2 to 8.4 ms with temperature increase from 13 to 300 K, which is mainly due to the temperature dependence of multiphonon relaxation between the ^4I13/2 and ^4I15/2 states and the changing population distribution among the Stark levels within the ^4I13/2 state. The experimental results imply that low temperature condition is better for the -l.6μm laser output.
基金
supported by the National Natural Science Foundation of China under Grant No. 90922029
