Single-impulse magnetic focusing of launched cold atoms

M.J. Pritchard, A.S. Arnold, D.A. Smith, I.G. Hughes

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We have theoretically investigated the focusing of a launched cloud of cold atoms. Time-dependent spatially-varying magnetic fields are used to impart impulses leading to a three-dimensional focus of the launched cloud. We discuss possible coil arrangements for a new focusing regime: isotropic 3D focusing of atoms with a single-impulse magnetic lens. We investigate focusing aberrations and find that, for typical experimental parameters, the widely used assumption of a purely harmonic lens is often inaccurate. The baseball lens offers the best possibility for isotropically focusing a cloud of weak-field-seeking atoms in 3D.
Original languageEnglish
Pages (from-to)4435-4450
Number of pages16
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number22
Publication statusPublished - 28 Nov 2004


  • cold atoms
  • magnetic fields
  • lens
  • photonics
  • optics


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