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arXiv · 1407.2841

Coherent backscattering of intense light by cold atoms with degenerate energy levels: Diagrammatic treatment

V. N. Shatokhin·R. Blattmann·T. Wellens·A. Buchleitner
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Abstract

We present a generalization of the diagrammatic pump-probe approach to coherent backscattering (CBS) of intense laser light for atoms with degenerate energy levels. We employ this approach for a characterization of the double scattering signal from optically pumped atoms with the transition $J_g\rightarrow J_e=J_g+1$ in the helicity preserving polarization channel. We show that, in the saturation regime, the internal degeneracy becomes manifest for atoms with $J_g\geq 1$, leading to a faster decrease of the CBS enhancement factor with increasing saturation parameter than in the non-degenerate case.

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V. N. Shatokhin, R. Blattmann, T. Wellens, A. Buchleitner. 2014-07-10. Coherent backscattering of intense light by cold atoms with degenerate energy levels: Diagrammatic treatment. https://doi.org/10.1103/physreva.90.023850

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