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An atom faucet

  • W. Wohlleben
  • F. Chevy
  • K. Madison
  • J. Dalibard

Abstract:

We present a simple and efficient source of slow atoms. From a background vapour loaded magneto-optical trap (MOT), a thin laser beam extracts a continuous jet of cold rubidium atoms. The jet that is typical to leaking MOT systems is created without any optical parts placed inside the vacuum chamber. We also present a simple three dimensional numerical simulation of the atomic motion in the presence of these multiple saturating laser fields combined with the inhomogeneous magnetic field of the MOT. At a pressure of PRb87 = 10-8 mbar and with a moderate laser power of 10 mW per beam, we generate a flux Φ = 1.3×108 atoms/s with a mean velocity of 14 m/s and a divergence of 10 mrad.

PACS. 32.80.Lg Mechanical effects of light on atoms, molecules, and ions – 32.80.Pj Optical cooling of atoms; trapping 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2001

Authors and Affiliations

  • W. Wohlleben
    • 1
  • F. Chevy
    • 1
  • K. Madison
    • 1
  • J. Dalibard
    • 1
  1. 1.Laboratoire Kastler Brossel, Département de Physique de l'École Normale Supérieure, 24 rue Lhomond, 75005 Paris, FranceFR

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