2005/08/31 by Michael Köhl, M. Köhl, Thomas Busch +6
Physics and Astronomy · #Advanced Frequency and Time Standards #Atom (system on chip) #Atom laser #Atomic and Subatomic Physics Research #Atomic physics #Beam (structure) #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Laser #Momentum (technical analysis) #Optics #Photon #Physics #Recoil #Transverse plane #cond-mat.other
paper · pdf · doi:10.1103/physreva.72.063618
published as Phys. Rev. A 72, 063618 (2005) · 4 pages, 4 figures
openalex publication_date 2005/12/23 · arxiv created 2006/01/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on an investigation of the beam profile of an atom laser extracted from a magnetically trapped 87Rb 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.