【摘要】 对SrAl12O19:Pr3+中4f2→4f2电偶极跃迁强度的参量化进行了研究.考虑明确的4f5d组态成分与4f2跃迁能级混杂对4f2组态内跃迁的影响.引入新的强度参数Tkq,参数值由3P0能级的相关实验数据拟合.利用拟合的参数T33和T53计算1S0向下各能级发射的跃迁强度,计算值与实验及Judd-Ofelt理论的结果进行了比较.更多还原

【Abstract】 Intensity parametrization of the electric dipole transitions within 4f 2 configuration of Pr 3+ in SrAl 12O 19 are reported,in which the mixing of the 4f 2 transitional states with the explicit 4f5d states is taken into account.A new set of phenomenological intensity parameters,T kq,are put forward,which are obtained from a best fit of the calculated and measured relative intensities of transitions from the 3P₀ level to the lower J multiplets.The fitted values,T 333.26×10-5 and T 53-5.46×10-5,have been used to analyze the transitions originating from the 1S₀ level.The present results are compared with that of the Judd-Ofelt analysis and the experimental measurements.更多还原