All-Optical BEC in a 1.06 micron dipole trap

Details All-Optical BEC in a 1.06 micron dipole trap All-Optical BEC in a 1.06 micron dipole trap

2011-01-06

arxiv.org/abs/1101.1140v2

Optics Communications, Volume 284, Issue 13, 15 June 2011, Pages 3288-3291

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1016/j.optcom.2011.03.008

We report the all-optical production of a Rb87 Bose-Einstein condensate (BEC) in a simple 1.06 micron dipole trap experiment. We load a single beam dipole trap directly from a magneto-optic trap (MOT) using an optimized loading sequence. After evaporation in the single beam, a second crossed beam is used for compression. The intensity in both beams is then reduced for evaporation to BEC. We obtain a BEC with 3.5E4 atoms after 3 seconds of total evaporation time. We also give a detailed account of the thermal distribution in cross beam traps. This account highlights the possible difficulties in using shorter wavelength lasers to condense all optically.

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