An atom faucet |
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Authors: | W Wohlleben F Chevy K Madison J Dalibard |
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Institution: | (1) Laboratoire Kastler Brossel, Département de Physique de l'école Normale Supérieure, 24 rue Lhomond, 75005 Paris, France, FR |
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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 P
Rb87 = 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.
Received 13 January 2001 |
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Keywords: | 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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