Absolute absorption on the rubidium D lines: comparison between theory and experiment

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dc.creatorSiddons, Paul
dc.creatorAdams, Charles S.
dc.creatorGe, Chang
dc.creatorHughes, Ifan G.
dc.date2008-05-08
dc.date.accessioned2026-07-07T12:48:19Z
dc.date.available2026-07-07T12:48:19Z
dc.descriptionWe study the Doppler-broadened absorption of a weak monochromatic probe beam in a thermal rubidium vapour cell on the D lines. A detailed model of the susceptibility is developed which takes into account the absolute linestrengths of the allowed electric dipole transitions and the motion of the atoms parallel to the probe beam. All transitions from both hyperfine levels of the ground term of both isotopes are incorporated. The absorption and refractive index as a function of frequency are expressed in terms of the complementary error function. The absolute absorption profiles are compared with experiment, and are found to be in excellent agreement provided a sufficiently weak probe beam with an intensity under one thousandth of the saturation intensity is used. The importance of hyperfine pumping for open transitions is discussed in the context of achieving the weak-probe limit. Theory and experiment show excellent agreement, with an rms error better than 0.2% for the D2 line at 16.5 degrees C.
dc.description18 pages, 8 figures, submitted to Journal of Physics B
dc.identifierhttps://arxiv.org/abs/0805.1139
dc.identifierhttp://arxiv.org/abs/0805.1139
dc.identifierJ. Phys. B: At. Mol. Opt. Phys. 41 155004 (2008)
dc.identifierdoi:10.1088/0953-4075/41/15/155004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222017
dc.subjectAtomic Physics
dc.titleAbsolute absorption on the rubidium D lines: comparison between theory and experiment
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