Third-order contributions to the 8S7/2 → 6P7/2, 6P5/2 two-photon transitions of Eu2+ in KMgF3
Third-order contributions to the 8S7/2 → 6P7/2, 6P5/2 two-photon transitions of Eu2+ in KMgF3
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DOI：
10.1088/0953-8984/16/16/002
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发表时间：
2004-04
期刊：
影响因子：
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通讯作者：
Ying Jiang;Lixin Ning;S. Xia;S. Xia;M. Yin;P. Tanner
中科院分区：
文献类型：
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作者：
Ying Jiang;Lixin Ning;S. Xia;S. Xia;M. Yin;P. Tanner
采用Judd-Poplant（JP）三阶公式计算了Eu ~（2+）在钙钛矿KMgF_3基质中的，Γ_8和，Γ_7，Γ_8双光子吸收（TPA）跃迁在入射辐射四个偏振方向上的谱线强度.在一般情况下，计算的相对强度与实验吻合良好，除了在过渡的线偏振和圆偏振之间的比率。特别地，三阶自旋轨道修正公式中的标量算符项成功地解释了9个不同线极化的跃迁。
The line strengths in four polarization directions of the incident radiation of the , Γ8 and , 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 transitions. In particular, the scalar operator term in the third-order spin–orbital correction formula successfully explains nine transitions with different linear polarizations.