The European Physical Journal D

, Volume 65, Issue 1–2, pp 11–18 | Cite as

Bose-Einstein condensation of 87Rb in a levitated crossed dipole trap

  • D. L. JenkinEmail author
  • D. J. McCarron
  • M. P. Köppinger
  • H. W. Cho
  • S. A. Hopkins
  • S. L. Cornish
Regular Article Bose-Einstein condensates


We report an apparatus and method capable of producing Bose-Einstein condensates (BECs) of ∼1 × 10687Rb atoms, and ultimately designed for sympathetic cooling of 133Cs and the creation of ultracold RbCs molecules. The method combines several elements: (i) the large recapture of a magnetic quadrupole trap from a magneto-optical trap; (ii) efficient forced RF evaporation in such a magnetic trap; (iii) the gain in phase-space density obtained when loading the magnetically trapped atoms into a far red-detuned optical dipole trap, and (iv) efficient evaporation to BEC within the dipole trap. We demonstrate that the system is capable of sympathetically cooling the |F = 1, mF = −1〉 and |1,0⟩ sublevels with |1, +1〉 atoms. Finally we discuss the applicability of the method to sympathetic cooling of 133Cs with 87Rb.


Beam Power 87Rb Magnetic Trap 87Rb Atom Trap Depth 


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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • D. L. Jenkin
    • 1
    Email author
  • D. J. McCarron
    • 1
  • M. P. Köppinger
    • 1
  • H. W. Cho
    • 1
  • S. A. Hopkins
    • 1
  • S. L. Cornish
    • 1
  1. 1.Department of PhysicsDurham University, Rochester Building, Science LaboratoriesDurhamUK

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