| Issue |
EPL
Volume 83, Number 5, September 2008
|
|
|---|---|---|
| Article Number | 50001 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/83/50001 | |
| Published online | 04 August 2008 | |
A quasi-monomode guided atom laser from an all-optical Bose-Einstein condensate
1
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: dgo@lkb.ens.fr
Received:
7
July
2008
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.