Magneto-electric effect on frequency mixing in atoms

被引:3
|
作者
Ovsiannikov, VD [1 ]
Chernushkin, VV [1 ]
机构
[1] Voronezh State Univ, Dept Phys, Voronezh 394693, Russia
关键词
alkaline-earth atoms; three-wave mixing; two-photon resonance; steady field; polarization; circular dichroism;
D O I
10.1002/lapl.200410079
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Steady electric and magnetic fields can stimulate frequency mixing of two laser waves in ensemble of free atoms. In addition to coherence conditions, the steady fields may induce additional resonance singularities essentially enhancing the cross section for scattering the sum-frequency wave. Interference between different components of the electric- and magnetic-field induced frequency summation amplitudes may cause significant effects on the efficiency of conversion. The dependence on the incident wave polarization and the atomic resonance structure is calculated analytically for the frequency mixing in atoms with a singlet structure of the ground and resonance states. Numerical estimates for the quantitative characteristics of the effect are presented for helium, alkali-earth and mercury atoms in their ground n(1)S(0)-state in the case of the two-photon resonance on excited singlet states with angular momentum 0, 1, and 2.
引用
收藏
页码:347 / 356
页数:10
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