This article has an erratum: [erratum]
Volume 83, Number 5, September 2008
|Number of page(s)||6|
|Published online||04 August 2008|
A quasi-monomode guided atom laser from an all-optical Bose-Einstein condensate
Laboratoire Kastler Brossel, CNRS UMR 8852, Ecole Normale Supérieure - 24 rue Lhomond, 75005 Paris, France, EU
2 Australian Centre for Quantum Atom Optics, Physics Department, The Australian National University Canberra, 0200, Australia
3 Laboratoire Collisions Agrégats Réactivité, CNRS UMR 5589, IRSAMC, Université Paul Sabatier 118 Route de Narbonne, 31062 Toulouse CEDEX 4, France, EU
Corresponding author: email@example.com
Accepted: 21 July 2008
We report the achievement of an optically guided and quasi-monomode atom laser, in all spin projection states (mF = -1, 0 and +1) of in rubidium 87. The atom laser source is a Bose-Einstein condensate (BEC) in a crossed dipole trap, purified to any one spin projection state by a spin-distillation process applied during the evaporation to BEC. The atom laser is outcoupled by an inhomogenous magnetic field, applied along the waveguide axis. The mean excitation number in the transverse modes is = 0.65 ± 0.05 for and = 0.8 ± 0.3 for the low-field seeker . Using a simple thermodynamical model, we infer from our data the population in each excited mode.
PACS: 03.75.Pp – Atom lasers / 03.75.Mn – Multicomponent condensates; spinor condensates / 37.10.Gh – Atom traps and guides
© EPLA, 2008
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