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Opt Express. 2008 Sep 1;16(18):14128-41.

Repeated interaction model for diffusion-induced Ramsey narrowing.

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Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.


In a recent paper [Y. Xiao et al., Phys. Rev. Lett. 96, 043601 (2006)] we characterized diffusion-induced Ramsey narrowing as a general phenomenon, in which diffusion of coherence in-and-out of an interaction region such as a laser beam induces spectral narrowing of the associated resonance lineshape. Here we provide a detailed presentation of the repeated interaction model of diffusion-induced Ramsey narrowing, with particular focus on its application to Electromagnetically Induced Transparency (EIT) of atomic vapor in a buffer gas cell. We compare this model both to experimental data and numerical calculations.

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