Phys. Rev. Lett. 93, 123001 (2004) [4 pages]Tuning the Scattering Length with an Optically Induced Feshbach ResonanceReceived 21 April 2004; published 15 September 2004 We demonstrate optical tuning of the scattering length in a Bose-Einstein condensate as predicted by Fedichev et al. [Phys. Rev. Lett. 77, 2913 (1996)]. In our experiment, atoms in a 87Rb condensate are exposed to laser light which is tuned close to the transition frequency to an excited molecular state. By controlling the power and detuning of the laser beam we can change the atomic scattering length over a wide range. In view of laser-driven atomic losses, we use Bragg spectroscopy as a fast method to measure the scattering length of the atoms. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.123001
DOI:
10.1103/PhysRevLett.93.123001
PACS:
34.50.Rk, 03.75.Nt, 32.80.Pj, 34.20.Cf
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