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arXiv · 1101.1140

All-Optical BEC in a 1.06 micron dipole trap

K. J. Arnold·M. D. Barrett
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Abstract

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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K. J. Arnold, M. D. Barrett. 2011-05-10. All-Optical BEC in a 1.06 micron dipole trap. https://doi.org/10.1016/j.optcom.2011.03.008

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