A continuous cold atomic beam from a magneto-optical trap

  • L. Cacciapuoti
  • A. Castrillo
  • M. de Angelis
  • G.M. Tino

DOI: 10.1007/s100530170172

Cite this article as:
Cacciapuoti, L., Castrillo, A., de Angelis, M. et al. Eur. Phys. J. D (2001) 15: 245. doi:10.1007/s100530170172

Abstract:

We have developed and characterized a new method to produce a continuous beam of cold atoms from a standard vapour-cell magneto-optical trap (MOT). The experimental apparatus is very simple. Using a single laser beam it is possible to hollow out in the source MOT a direction of unbalanced radiation pressure along which cold atoms can be accelerated out of the trap. The transverse cooling process that takes place during the extraction reduces the beam divergence. The atomic beam is used to load a magneto-optical trap operating in an ultra-high vacuum environment. At a vapour pressure of 10-8mbar in the loading cell, we have produced a continuous flux of 7×107atoms/s at the recapture cell with a mean velocity of 14 m/s. A comparison of this method with a pulsed transfer scheme is presented.

PACS. 32.80.Pj Optical cooling of atoms; trapping – 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions 

Copyright information

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

Authors and Affiliations

  • L. Cacciapuoti
    • 1
  • A. Castrillo
    • 1
  • M. de Angelis
    • 2
  • G.M. Tino
    • 1
  1. 1.Dipartimento di Scienze Fisiche, Università degli Studi di Napoli “Federico II” and Istituto Nazionale per la Fisica della Materia (INFM), Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Napoli, ItalyIT
  2. 2.Istituto di Cibernetica del CNR, via Toiano 6, 80072 Arco Felice, ItalyIT
  3. 3.Dipartimento di Fisica, Università di Firenze, largo E. Fermi 2, 50125 Firenze, ItalyIT

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