Physics – Condensed Matter – Quantum Gases
Scientific paper
2009-11-30
Physical Review A: Atomic, Molecular and Optical Physics 81, 2 (2010) 023631
Physics
Condensed Matter
Quantum Gases
Scientific paper
10.1103/PhysRevA.81.023631
In this paper, we report on the production of a Bose--Einstein condensate (BEC) of sodium using light--induced desorption as an atomic source. We load about 2X10^7 atoms in a MOT from this source with a ~6 s loading time constant. The MOT lifetime can be kept around 27 s by turning off the desorbing light after loading. We show that the pressure drops down by a factor of 40 in less than 100 ms after the extinction of the desorbing light, restoring the low background pressure for evaporation. Using this technique, a \na BEC with 10^4 atoms is produced after a 6 s evaporation in an optical dipole trap.
Dalibard Jean
Gerbier Fabrice
Jacob David
Mimoun Emmanuel
Sarlo Luigi de
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