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Photoassociative Frequency Shift in a Quantum Degenerate Gas

Jordan M. Gerton·Brian J. Frew·Randall G. Hulet
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Abstract

We observe a light-induced frequency shift in single-photon photoassociative spectra of magnetically trapped, quantum degenerate 7Li. The shift is a manifestation of the coupling between the threshold continuum scattering states and discrete bound levels in the excited-state molecular potential induced by the photoassociation laser. The frequency shift is observed to be linear in the laser intensity with a measured proportionality constant that is in good agreement with theoretical predictions. The frequency shift has important implications for a scheme to alter the interactions between atoms in a Bose-Einstein condensate using photoassociation resonances.

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Jordan M. Gerton, Brian J. Frew, Randall G. Hulet. 2001-08-07. Photoassociative Frequency Shift in a Quantum Degenerate Gas. https://doi.org/10.1103/physreva.64.053410

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