Single-impulse magnetic focusing of launched cold atoms

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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.
LanguageEnglish
Pages4435-4450
Number of pages16
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume37
Issue number22
DOIs
Publication statusPublished - 28 Nov 2004

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impulses
atoms
lenses
magnetic lenses
aberration
coils
harmonics
magnetic fields

Keywords

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

Cite this

Pritchard, M.J. ; Arnold, A.S. ; Smith, D.A. ; Hughes, I.G. / Single-impulse magnetic focusing of launched cold atoms. In: Journal of Physics B: Atomic, Molecular and Optical Physics. 2004 ; Vol. 37, No. 22. pp. 4435-4450.
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Single-impulse magnetic focusing of launched cold atoms. / Pritchard, M.J.; Arnold, A.S.; Smith, D.A.; Hughes, I.G.

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 37, No. 22, 28.11.2004, p. 4435-4450.

Research output: Contribution to journalArticle

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AU - Pritchard, M.J.

AU - Arnold, A.S.

AU - Smith, D.A.

AU - Hughes, I.G.

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AB - 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.

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KW - photonics

KW - optics

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