Junker, M.Dries, D.Welford, C.Hitchcock, J.Chen, Y.P.Hulet, R.G.2015-03-302015-03-302008Junker, M., Dries, D., Welford, C., et al.. "Photoassociation of a Bose-Einstein Condensate near a Feshbach Resonance." <i>Physical Review Letters,</i> 101, no. 6 (2008) American Physical Society: 60406. http://dx.doi.org/10.1103/PhysRevLett.101.060406.https://hdl.handle.net/1911/79450We measure the effect of a magnetic Feshbach resonance (FR) on the rate and light-induced frequency shift of a photoassociation resonance in ultracold Li7. The photoassociation-induced loss-rate coefficient Kp depends strongly on magnetic field, varying by more than a factor of 10?4 for fields near the FR. At sufficiently high laser intensities, Kp for a thermal gas decreases with increasing intensity, while saturation is observed for the first time in a Bose-Einstein condensate. The frequency shift is also strongly field dependent and exhibits an anomalous blueshift for fields just below the FR.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttp://dx.doi.org/10.1103/PhysRevLett.101.060406