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A: Atomphysik

A 17: Postersitzung 2

A 17.30: Poster

Donnerstag, 27. März 2003, 16:00–18:30, Poster

Loading and cooling a hybrid MOT-Dipole trap. — •I. Mistrik, A. Tripathi, C. Eisele, M. Moll, R. Bourouis, and H. Helm — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder Str. 3, 79104-Freiburg.

We describe an experiment in which Rb-atoms are precooled in a 2-D MOT at high Rb-pressure and are then transferred into a UHV chamber where they are first captured in a conventional MOT, compressed at field gradients above 50 G/cm and then loaded into a CO₂ laser trap. Storage times of 10 seconds are achieved in a single beam CO₂ laser trap. Density enhancement is observed in a standing wave configuration. The procedure to optimally load the atoms at high density will be discussed as well as measurements of the temperature and density in the dipole trap. We also hope to present first results on photoassociation and on collective behaviour of cold Rydberg-atoms in the dipole trap. Research supported by SFB 276 TP C16.