Combination of a magnetic Feshbach resonance and an optical bound-to-bound transition

Physical Review A (Impact Factor: 2.81). 03/2009; 79(6). DOI: 10.1103/PhysRevA.79.062713
Source: arXiv


We use laser light near resonant with an optical bound-to-bound transition to shift the magnetic field at which a Feshbach resonance occurs. We operate in a regime of large detuning and large laser intensity. This reduces the light-induced atom-loss rate by one order of magnitude compared to our previous experiments [D.M. Bauer et al. Nature Phys. 5, 339 (2009)]. The experiments are performed in an optical lattice and include high-resolution spectroscopy of excited molecular states, reported here. In addition, we give a detailed account of a theoretical model that describes our experimental data.

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