Europhys. Lett., 63 (6) , pp. 812-818 (2003)
Continuous optical loading of a Bose-Einstein condensate in the Thomas-Fermi regimeF. Floegel, L. Santos and M. Lewenstein
Institut für Theoretische Physik, Universität Hannover - D-30167 Hannover, Germany
(Received 19 March 2003; accepted in final form 24 June 2003)
We discuss the optical loading of a Bose-Einstein condensate in the Thomas-Fermi regime. The condensate is loaded via spontaneous emission from a reservoir of excited-state atoms. By means of a master equation formalism, we discuss the modification of the condensate temperature during the loading. We identify the threshold temperature, , above (below) which the loading process leads to cooling (heating), respectively. The consequences of our analysis for the continuous loading of an atom laser are discussed.
42.50.Vk - Mechanical effects of light on atoms, molecules, electrons, and ions.
03.75.Kk - Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow.
03.75.Pp - Atom lasers.
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