Abstract

We propose and investigate a technique for generating smooth two-dimensional potentials for ultra-cold atoms based on the rapid scanning of a far-detuned laser beam using a two-dimensional acousto-optical modulator (AOM). We demonstrate the implementation of a feed-forward mechanism for fast and accurate control of the spatial intensity of the laser beam, resulting in improved homogeneity for the atom trap. This technique could be used to generate a smooth toroidal trap that would be useful for static and dynamic experiments on superfluidity and persistent currents with ultra-cold atoms.

© 2008 Optical Society of America

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History
Original Manuscript: December 12, 2007
Manuscript Accepted: January 16, 2008
Revised Manuscript: January 16, 2008
Published: January 18, 2008

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Author Affiliations

E. D. van Ooijen

School of Physical Sciences, The University of Queensland

S. K. Schnelle, M. J. Davis, N. R. Heckenberg, H. Rubinsztein-Dunlop

The University of Queensland

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