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All-optical runaway evaporation to Bose-Einstein condensation

Abstract : 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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https://hal.archives-ouvertes.fr/hal-00367901
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Submitted on : Thursday, March 12, 2009 - 5:10:40 PM
Last modification on : Saturday, June 25, 2022 - 11:06:22 AM
Long-term archiving on: : Tuesday, June 8, 2010 - 11:25:01 PM

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  • HAL Id : hal-00367901, version 1
  • ARXIV : 0903.2745

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Jean-François Clément, Jean-Philippe Brantut, Martin Robert-De-Saint-Vincent, Robert Nyman, Alain Aspect, et al.. All-optical runaway evaporation to Bose-Einstein condensation. Physical Review A, American Physical Society, 2009, 79 (6), pp.061406(R). ⟨hal-00367901⟩

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