Temperature sensing behavior of Eu~(3+) doped tellurite and calibo glasses

摘要

The effect of temperature on the luminescence intensity of the two bands due to ~5D_1 → ~7F_1 and ~5D_0 → ~7F_1 transitions in Eu~(3+) on excitation with the 476.5 nm line from an Ar~+ laser has been studied in tellurite and calibo glasses. It is interesting to note that the peak intensity of the ~5D_1 → ~7F_1 transition increases with increasing temperature where as that of the ~5D_0 → ~7F_1 transition decreases. The ratio of the intensities of the two bands have been used to estimate the temperature.