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Optical pumping of a lithium atomic beam for atom interferometry

  • Jonathan Gillot
  • Alexandre Gauguet
  • Matthias Büchner
  • Jacques Vigué
Regular Article

Abstract

We apply optical pumping to prepare the lithium beam of our atom interferometer in a single hyperfine-Zeeman sublevel: we use two components of the D1-line for pumping the 7Li atoms in a dark state F, m F = +2 (or −2) sublevel. The optical pumping efficiency has been characterized by two techniques: state-selective laser atom deflection or magnetic dephasing of the atom interferometer signals. The first technique has not achieved a high sensitivity, because of a limited signal to noise ratio, but magnetic dephasing signals have shown that about 95% of the population has been transferred in the aimed sublevel, with similar results for three mean velocities of the atomic beam covering the range 744–1520 m/s.

Keywords

Atomic Physics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Jonathan Gillot
    • 1
  • Alexandre Gauguet
    • 1
  • Matthias Büchner
    • 1
  • Jacques Vigué
    • 1
  1. 1.Laboratoire Collisions Agrégats Réactivité-IRSAMC Université de Toulouse-UPS and CNRS UMR 5589Toulouse CedexFrance

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