Influence of diffusion of atoms on the dark resonance lineshape in spatially bounded laser fields

Details Influence of diffusion of atoms on the dark resonance lineshape in spatially bounded laser fields Influence of diffusion of atoms on the dark resonance lineshape in spatially bounded laser fields

2010-07-26

arxiv.org/abs/1007.4425v1

Ukrainian Journal of Physics, 2010, Vol. 55 no.4, pp. 393-402 (www.ujp.bitp.kiev.ua)

Physics

Atomic Physics

21 pages, 7 figures

Scientific paper

We propose a diffusion model for the recently discovered diffusion-induced Ramsey narrowing arising when atoms diffuse in a buffer-gas cell in the laser radiation field. The diffusion equation for the coherence of metastable states coupled with an excited state by laser radiation of different frequencies in a three-level scheme of the atom-field interaction is obtained in the strong-collision approximation. The dependence of the shape of an absorption line near the transmission maximum of one of the frequencies on the two-photon resonance detuning for various geometries of the cell is investigated.

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