Third-order contributions to the 8S7/2 → 6P7/2, 6P5/2 two-photon transitions of Eu2+ in KMgF3

doi:10.1088/0953-8984/16/16/002

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Journal of Physics: Condensed Matter

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Journal of Physics: Condensed Matter Volume 16 Number 16 Create an alert RSS this journal

Ying Jiang et al 2004 J. Phys.: Condens. Matter 16 2773 doi:10.1088/0953-8984/16/16/002

Third-order contributions to the ⁸S_7/2 → ⁶P_7/2, ⁶P_5/2 two-photon transitions of Eu²⁺ in KMgF₃

Ying Jiang¹, Lixin Ning¹, Shangda Xia^1,2, Min Yin¹ and Peter A Tanner²

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Abstract References

The line strengths in four polarization directions of the incident radiation of the $({}^{8}{\mathrm {S_{7/2})}} \to ({}^{6}{\mathrm {P}}_{5/2}) \Gamma _7$ , Γ₈ and $({}^{8}{\mathrm {S}}_{7/2})\to ({}^{6}{\mathrm {P}}_{7/2})\Gamma _6$ , Γ₇, Γ₈ two photon absorption (TPA) transitions of Eu²⁺ in the perovskite KMgF₃ host have been calculated using the third-order Judd–Pooler (JP) formalism. In general, the calculated relative intensities are in good agreement with experiment, except for the ratios between the linear and circular polarizations in the ${}^{8}{\mathrm {S}}_{7/2} \to {}^{6}{\mathrm {P}}_{7 / 2}$ transitions. In particular, the scalar operator term in the third-order spin–orbital correction formula successfully explains nine ${}^{8}{\mathrm {S}}_{7/2} \to {}^ 6{\mathrm {P}}_{7 / 2}$ transitions with different linear polarizations.