All-optical runaway evaporation to Bose-Einstein condensation

Details All-optical runaway evaporation to Bose-Einstein condensation All-optical runaway evaporation to Bose-Einstein condensation

2009-03-16

arxiv.org/abs/0903.2745v1

Physical Review A 79, 6 (2009) 061406(R)

Physics

Atomic Physics

Scientific paper

We demonstrate runaway evaporative cooling directly with a tightly confining optical dipole trap and achieve fast production of condensates of 1.5x10^5 87Rb atoms. Our scheme is characterized by an independent control of the optical trap confinement and depth, permitting forced evaporative cooling without reducing the trap stiffness. Although our configuration is particularly well suited to the case of 87Rb atoms in a 1565nm optical trap, where an efficient initial loading is possible, our scheme is general and should allow all-optical evaporative cooling at constant stiffness for most species.

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