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

Matthew J. Pritchard, Aidan S. Arnold, Simon L. Cornish, David W. Hallwood, Chris V.S. Pleasant, Ifan G. Hughes

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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 magneto-optical trap (MOT) and guiding them vertically through 22 cm. 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.
Original languageEnglish
Article number309
Pages (from-to)1-21
Number of pages21
JournalNew Journal of Physics
Volume8
Issue numberDecember
DOIs
Publication statusPublished - 7 Dec 2006

Keywords

  • cold atoms
  • laser guide
  • pulsed magnetic fields
  • magnetic lens
  • optics

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