Applied Physics B

, Volume 73, Issue 8, pp 791–799 | Cite as

Mixture of ultracold lithium and cesium atoms in an optical dipole trap

  • A. Mosk
  • S. Kraft
  • M. Mudrich
  • K. Singer
  • W. Wohlleben
  • R. Grimm
  • M. Weidemüller
Article

Abstract.

We present the first simultaneous trapping of two different ultracold atomic species in a conservative trap. Lithium and cesium atoms are stored in an optical dipole trap formed by the focus of a CO2 laser. Techniques for loading both species of atoms are discussed and observations of elastic and inelastic collisions between the two species are presented. A model for sympathetic cooling of two species with strongly different mass in the presence of slow evaporation is developed. From the observed Cs-induced evaporation of Li atoms we estimate a cross-section for cold elastic Li-Cs collisions.

PACS: 32.80.Pj; 51.10.+y; 34.20.-b; 33.80.Ps 

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Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • A. Mosk
    • 1
  • S. Kraft
    • 1
  • M. Mudrich
    • 1
  • K. Singer
    • 1
  • W. Wohlleben
    • 1
  • R. Grimm
    • 1
  • M. Weidemüller
    • 1
  1. 1.Max-Planck-Institut für Kernphysik, 69029 Heidelberg, GermanyGermany

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