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

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 $J_g\to J_e=J_g+1$ in the helicity preserving polarization channel. We show that, in the saturation regime, the internal degeneracy becomes manifest for atoms with $J_g\ge 1$, leading to a faster decrease of the CBS enhancement factor with increasing saturation parameter than in the non-degenerate case.

18 pages, 16 figures

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Cited by in corpus (2)

• Nonlinear quantum transport of light in a cold atomic cloud
• Coherent inelastic backscattering of laser light from three isotropic atoms