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arXiv · 0705.1479

Accumulation of chromium metastable atoms into an Optical Trap

R. Chicireanu·Q. Beaufils·A. Pouderous·B. Laburthe-Tolra·E. Marechal·L. Vernac·J. -C. Keller·O. Gorceix
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Abstract

We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap. The steady state is reached after about 400 ms, providing a cloud of more than one million metastable atoms at a temperature of about 100 microK, with a peak density of 10^{18} atoms.m^{-3}. We have optimized the loading procedure, and measured the light shift of the 5D4 state by analyzing how the trapped atoms respond to a parametric excitation. We compare this result to a theoretical evaluation based on the available spectroscopic data for chromium atoms.

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R. Chicireanu, Q. Beaufils, A. Pouderous, B. Laburthe-Tolra, E. Marechal, L. Vernac, J. -C. Keller, O. Gorceix. 2007-05-10. Accumulation of chromium metastable atoms into an Optical Trap. https://doi.org/10.1140/epjd%2Fe2007-00245-y

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