Time-independent and time-dependent photoassociation of spin-polarized rubidium

H. M.J.M. Boesten, C. C. Tsai, D. J. Heinzen, A. J. Moonen, B. J. Verhaar

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22 Citations (Scopus)


We extract information about collisions of ultra-cold ground-state rubidium atoms from observations of a g-wave shape resonance in the 85 Rb + 85Rb system via time-independent and time-dependent photoassociation. The shape resonance arises from a quasi-bound state inside a centrifugal barrier that enhances the excitation to the bound electronically excited state by the photoassociation laser in the time-independent experiment. The shape resonance is sufficiently long-lived that its build-up through the barrier can be observed by first depleting it via a photoassociation laser pulse and then measuring the rate of photoassociation by a second laser pulse with a variable delay time. A combined method of analysis of the time-independent and time-dependent experiments is presented We discuss the spectroscopy of states of two particles with spin trapped inside a centrifugal barrier, interacting via direct and indirect spin-spin interactions.

Original languageEnglish
Pages (from-to)287-308
Number of pages22
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number2
Publication statusPublished - 1999 Jan 28

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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