All-optical Bose-Einstein condensation in a 1.06 mu m dipole trap

作者：Arnold K J; Barrett M D^*

来源：Optics Communications, 2011, 284(13): 3288-3291.

DOI：10.1016/j.optcom.2011.03.008

• Optical trapping
• Bose-Einstein condensate

We report the all-optical production of a Rb-87 Bose-Einstein condensate (BEC) in a simple 1.06 mu m dipole trap experiment. We load a single beam dipole trap directly from a magneto-optic trap (MOT). 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 3.5 x 10(4) atoms after 3 s 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.

• 出版日期2011-6-15