Observing the profile of an atom laser beam

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Observing the profile of an atom laser beam

Kohl, M.; Busch, Thomas; Molmer, K.; Hansch, T. W.; Esslinger, T.
Date: 2005
Copyright: © 2005, American Physical Society
Related: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.72.063618
Citation: Köhl, M., Busch, T., Mølmer, K., Hänsch, T. W. and Esslinger, T. (2005) 'Observing the profile of an atom laser beam', Physical Review A, 72(6), 063618 (4pp). doi: 10.1103/PhysRevA.72.063618
Published Version: 10.1103/PhysRevA.72.063618

Abstract:

We report on an investigation of the beam profile of an atom laser extracted from a magnetically trapped Rb-87 Bose-Einstein condensate. The transverse momentum distribution is magnified by a curved mirror for matter waves and a momentum resolution of 1/60 of a photon recoil is obtained. We find the transverse momentum distribution to be determined by the mean-field potential of the residing condensate, which leads to a nonsmooth transverse density distribution. Our experimental data are compared with a full three-dimensional simulation of the output coupling process and we find good agreement.

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