Mixture of ultracold lithium and cesium atoms in an optical dipole trap |
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Authors: | A Mosk S Kraft M Mudrich K Singer W Wohlleben R Grimm M Weidemüller |
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Institution: | (1) Max-Planck-Institut für Kernphysik, 69029 Heidelberg, Germany, DE |
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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.
Received: 1 August 2001 / Published online: 23 November 2001 |
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Keywords: | PACS: 32 80 Pj 51 10 +y 34 20 -b 33 80 Ps |
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