Theory of Dicke narrowing in coherent population trapping

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dc.creatorFirstenberg, O.
dc.creatorShuker, M.
dc.creatorBen-Kish, A.
dc.creatorFredkin, D. R.
dc.creatorDavidson, N.
dc.creatorRon, A.
dc.date2007-01-02
dc.date2007-01-15
dc.date.accessioned2026-07-07T08:23:29Z
dc.date.available2026-07-07T08:23:29Z
dc.descriptionThe Doppler effect is one of the dominant broadening mechanisms in thermal vapor spectroscopy. For two-photon transitions one would naively expect the Doppler effect to cause a residual broadening, proportional to the wave-vector difference. In coherent population trapping (CPT), which is a narrow-band phenomenon, such broadening was not observed experimentally. This has been commonly attributed to frequent velocity-changing collisions, known to narrow Doppler-broadened one-photon absorption lines (Dicke narrowing). Here we show theoretically that such a narrowing mechanism indeed exists for CPT resonances. The narrowing factor is the ratio between the atom's mean free path and the wavelength associated with the wave-vector difference of the two radiation fields. A possible experiment to verify the theory is suggested.
dc.description6 pages, 2 figures; Introduction revised
dc.identifierhttps://arxiv.org/abs/quant-ph/0701008
dc.identifierhttp://arxiv.org/abs/quant-ph/0701008
dc.identifierPhys. Rev. A 76, 013818 (2007)
dc.identifierdoi:10.1103/PhysRevA.76.013818
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136017
dc.subjectQuantum Physics
dc.titleTheory of Dicke narrowing in coherent population trapping
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