Applied Physics B

, Volume 79, Issue 8, pp 993–999 | Cite as

Photoassociation inside an optical dipole trap: absolute rate coefficients and Franck–Condon factors

  • R. Wester
  • S.D. Kraft
  • M. Mudrich
  • M.U. Staudt
  • J. Lange
  • N. Vanhaecke
  • O. Dulieu
  • M. Weidemüller
Article

Abstract

We present quantitative measurements of the photoassociation of cesium molecules inside a far-detuned optical dipole trap. A model of the trap-depletion dynamics is derived which allows us to extract absolute photoassociation rate coefficients for the initial single-photon photoassociation step from measured trap-loss spectra. The sensitivity of this approach is demonstrated by measuring the Franck–Condon modulation of the weak photoassociation transitions into the low-vibrational levels of the outer well of the Og- state that correlates to the 6s+6p3/2 asymptote. The measurements are compared to theoretical predictions. In a magneto-optical trap, these transitions have previously only been observed indirectly through ionization of ground-state molecules.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • R. Wester
    • 1
  • S.D. Kraft
    • 1
  • M. Mudrich
    • 1
  • M.U. Staudt
    • 1
  • J. Lange
    • 1
  • N. Vanhaecke
    • 2
  • O. Dulieu
    • 2
  • M. Weidemüller
    • 1
  1. 1.Physikalisches InstitutUniversität FreiburgFreiburgGermany
  2. 2.CNRS, Bâtiment 505Laboratoire Aimé CottonOrsayFrance

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