Coherence properties of an atom laser

Details Coherence properties of an atom laser Coherence properties of an atom laser

1999-06-02

arxiv.org/abs/cond-mat/9906033v1

Physics

Condensed Matter

11 pages, 2 Postscript figures

Scientific paper

10.1088/0953-4075/33/1/305

We study the coherence properties of an atom laser, which operates by extracting atoms from a gaseous Bose-Einstein condensate via a two-photon Raman process, by analyzing a recent experiment. We obtain good agreement with the experimental data by solving the time-dependent Gross-Pitaevskii equation in three dimensions both numerically and with a Thomas-Fermi model. The coherence length is strongly affected by the space-dependent phase developed by the condensate when the trapping potential is turned off.

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