Laser cooling by collisional redistribution of radiation

Ulrich Vogl and Martin Weitz ()
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Ulrich Vogl: Institut für Angewandte Physik der Universität Bonn, Wegelerstraße 8, 53115 Bonn, Germany
Martin Weitz: Institut für Angewandte Physik der Universität Bonn, Wegelerstraße 8, 53115 Bonn, Germany

Nature, 2009, vol. 461, issue 7260, 70-73

Abstract: Lightly cooled Collisional redistribution of radiation has been proposed as a cooling mechanism for atomic two-level systems. A group from Bonn University now reports a proof-of-principle experiment demonstrating laser cooling of an atomic gas by this mechanism in which a relative cooling of 66 K is achieved in an ultradense vapour of rubidium atoms and argon buffer gas. The technique may facilitate fundamental studies of supercooling and applications in optical refrigeration.

Date: 2009
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DOI: 10.1038/nature08203

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