Journal
EPL
Volume 83, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/83/50001
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Funding
- Delegation Generale pour l'Armement (DGA) [05-251487]
- Institut Francilien de Recherche sur les Atomes Froids (IFRAF)
- Plan-Pluri Formation (PPF)
- IFRAF
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We report the achievement of an optically guided and quasi-monomode atom laser, in all spin projection states (m(F) = -1, 0 and +1) of F = 1 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 magneticfield, applied along the waveguide axis. The mean excitation number in the transverse modes is < n > = 0.65 +/- 0.05 for m(F) = 0 and < n > = 0.8 +/- 0.3 for the low-field seeker m(F) = -1. Using a simple thermodynamical model, we infer from our data the population in each excited mode. Copyright (c) EPLA, 2008.
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