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Zeitschrift für Physik D Atoms Molecules and Clusters

Dynamics of a trapped two level atom in a bichromatic laser field: heating, cooling and multistability

Erich Joos, Albrecht Lindner

Published Sep 1, 1991• 1 citation
Publisher
DOI
10.1007/bf01426377

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We present a calculation of cooling of Rydberg atoms in bichromatic standing light waves. The atoms in our model are assumed to have a cascade three-level transition scheme, with the second excited level being the Rydberg state. The cooling fields, which also excite the atoms to the Rydberg state, consist of two standing waves whose frequencies are tuned near the two transition frequencies of the cascade atomic system. It is shown that the mechanisms of Sisyphus cooling and velocity-selective coherent population trapping can co-exist in such a configuration, and under certain conditions the majority of the laser-cooled atoms are in the Rydberg state.