摘要
Sixteen two-photon absorption (TPA) transition line strengths were calculated for the Pr 3+ ion in the cubic host Cs_2NaPrCl_6. In the calculation, two kinds of intermediate virtual excited (4f5d) states were utilized, one was the direct product of 4f1 core and 5d1 electronic states, and the other was 4f5d coupled states obtained by using the Reid f2 and fd programs. It was found that the calculated trends in intensities are fairly similar and the interaction between the 5d electron and the (4f)1 core in the 4f5d configuration does not provide dominant contributions to the two-photon absorption transition intensity of the Pr 3+ ion. In addition, the main channels of the strongest two-photon transition 3H_4Γ_1→3P_2Γ_5 were also obtained.
Sixteen two-photon absorption (TPA) transition line strengths were calculated for the Pr 3+ ion in the cubic host Cs_2NaPrCl_6. In the calculation, two kinds of intermediate virtual excited (4f5d) states were utilized, one was the direct product of 4f1 core and 5d1 electronic states, and the other was 4f5d coupled states obtained by using the Reid f2 and fd programs. It was found that the calculated trends in intensities are fairly similar and the interaction between the 5d electron and the (4f)1 core in the 4f5d configuration does not provide dominant contributions to the two-photon absorption transition intensity of the Pr 3+ ion. In addition, the main channels of the strongest two-photon transition 3H_4Γ_1→3P_2Γ_5 were also obtained.
