Observation of narrow Autler-Townes components in the resonant response of a dense atomic gas

Details Observation of narrow Autler-Townes components in the resonant response of a dense atomic gas Observation of narrow Autler-Townes components in the resonant response of a dense atomic gas

2008-04-25

arxiv.org/abs/0804.4151v1

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.78.013802

We have experimentally studied the reflection of a weak probe beam from a dense atomic potassium vapor in the presence of a strong laser field tuned to the atomic resonance transition. We have observed an Autler-Townes doublet under hitherto unexplored conditions, namely that the Rabi frequency induced by the strong laser field is much smaller than the self-broadened width of the resonance transition of the unexcited vapor. We attribute our observation to a reduction of the atomic decoherence by the strong drive field. We present a theoretical model of nonlinear processes in a dense atomic gas to explain the observed results.

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