Continuous loading of a conservative potential trap from an atomic beam

We demonstrate the fast accumulation of 52Cr atoms in a conservative potential from a guided atomic beam. Without laser cooling on a cycling transition, a dissipative step involving optical pumping allows us to load atoms at a rate of 2×10(7)  s(-1) in the trap. Within less than 100 ms we reach the...

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Bibliographic Details
Published in:Physical review letters 2011-04, Vol.106 (16), p.163002-163002, Article 163002
Main Authors: Falkenau, Markus, Volchkov, Valentin V, Rührig, Jahn, Griesmaier, Axel, Pfau, Tilman
Format: Article
Language:English
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Summary:We demonstrate the fast accumulation of 52Cr atoms in a conservative potential from a guided atomic beam. Without laser cooling on a cycling transition, a dissipative step involving optical pumping allows us to load atoms at a rate of 2×10(7)  s(-1) in the trap. Within less than 100 ms we reach the collisionally dense regime, from which we produce a Bose-Einstein condensate with subsequent evaporative cooling. This constitutes a new approach to degeneracy where Bose-Einstein condensation can be reached without a closed cycling transition, provided that a slow beam of particles can be produced.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.106.163002