Photoassociation of a Quantum Degenerate Gas

Details Photoassociation of a Quantum Degenerate Gas Photoassociation of a Quantum Degenerate Gas

2003-07-17

arxiv.org/abs/cond-mat/0307447v1

Physics

Condensed Matter

Soft Condensed Matter

12 pages, 3 figures, to be published in PRL

Scientific paper

We have measured the intensity dependent rate and frequency shift of a photoassociation transition in a quantum degenerate gas of 7Li. The rate increases linearly with photoassociation laser intensity for low intensities, whereas saturation is observed at higher intensities. The measured rates and shifts agree reasonably well with theory within the estimated systematic uncertainties. Several theoretically predicted saturation mechanisms are discussed, but a theory in which saturation arises because of quantum mechanical unitarity agrees well with the data.

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