Berlin 2008 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 38: Matter At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...
TT 38.10: Talk
Friday, February 29, 2008, 12:45–13:00, H 3010
Construction of an optical dipole trap for studying bosonic mixtures — •Lars Steffens1,2, Shincy John1, Claudia Weber1, Artur Widera1, Manfred Fiebig2, and Dieter Meschede1 — 1IAP, Universität Bonn, Wegelerstr. 8, 53115 Bonn, Germany — 2HISKP, Universität Bonn, Nussallee 14-16, 53115 Bonn, Germany
Because of their well controlable behaviour, ultracold atomic gases are a useful tool for studying quantum mechanical many body systems. A variety of problems of solid state physics could be modelled by using systems of ultracold gases. In addition, studying mixtures of ultracold gases lead to an improved understanding of quantum mechanical multi component systems. Up to now, mostly boson-fermion mixtures were considered while only little research has been done on boson-boson mixtures of different atomic species. Here the construction of an simple optical dipole trap designed for Feshbach spectroscopy of Rb-Cs mixtures is presented. The response of the atomic species to the light field is discussed. A precise simulation of the optical potential by a 3D-simulation of the light field including aberration and diffraction effects is given. These results can be used as a basis for the construction of other dipole potential setups that can be used to describe a broad variety of external parameters.