五磷酸铽荧光光谱偏振特性的研究

POLARIZED CHARACTER OF TbP_5O_(14) EMISSION SPECTRUM

本文报告了在77K下TbP_5O_(14)中Tb^(3+)离子的~5D_4-^(7F)J,跃迁荧光光谱的偏振特性。根据退偏度的规律认定了~5D_4和^(7F)J的大部分Stark能级的标号。

In this paper the polarized Iumminesence spectra are reported for TbP_5O_(14). These spectra were obtained at 77k. The polarization of each line was measured by the ratio (?), where I_(11)(I_⊥) is the intensity of this line when polarized direction and the analyser is parallel (perpendicular). In according to the polarized ratio the stark levels of ~5D_4 and ~7F_J can be assigned. First, on the basis of the polarized character of spectra of ~5D_4-~7D_0(A_1) transition the level's name of ~5D_4 stark levels are assigned. Second, on the basis of the polarized character of ~5D_4-~7F_J transition the level's name of ~7F, stark levels are assigned. The polarized character of the line of ~5D_4-A_1 transition is regular and the assignment is easy. the ~5D_4-A_2, ~5D_4-B_1, ~5D_4-B_2 and ~5D_4-E transition aren't regular and their assignment is complicated.