
pmid: 11690255
arXiv: cond-mat/0107032
We measure the angular divergence of a quasi-continuous, rf-outcoupled, free-falling atom laser as a function of the outcoupling frequency. The data is compared to a Gaussian-beam model of laser propagation that generalizes the standard formalism of photonic lasers. Our treatment includes diffraction, magnetic lensing, and interaction between the atom laser and the condensate. We find that the dominant source of divergence is the condensate-laser interaction.
5 pages, 3 figures. V3: as will appear in Phys. Rev. Lett.; RevTeX 4.0
[PHYS.COND.CM-GEN] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Atomic Physics (physics.atom-ph), Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter, [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Physics - Atomic Physics
[PHYS.COND.CM-GEN] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other], Atomic Physics (physics.atom-ph), Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter, [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Physics - Atomic Physics
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