Transport of launched cold atoms with a laser guide and pulsed magnetic fields

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We propose the novel combination of a laser guide and magnetic lens to transport a cold atomic cloud. We have modelled the loading and guiding of a launched cloud of cold atoms with the optical dipole force. We discuss the optimum strategy for loading typically 30% of the atoms from a MOT and guiding them vertically through 22cm. However, although the atoms are tightly confined transversely, thermal expansion in the propagation direction still results in a density loss of two orders of magnitude. By combining the laser guide with a single impulse from a magnetic lens we show one can actually increase the density of the guided atoms by a factor of 10.
18 pages 11 figures. To appear in New J. Phys. Original version modified to include referee's improvements

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Atomic Physics, Optics

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http://salesiana.dossiersoluciones.com/handle/123456789/120318

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/physics/0610027
 http://arxiv.org/abs/physics/0610027
 New J. Phys. 8, 309 (2006).
 doi:10.1088/1367-2630/8/12/309

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arXiv