Düsseldorf 2007 – scientific programme

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A: Fachverband Atomphysik

A 14: Poster I - Ultra-cold atoms, ions and BEC

A 14.3: Poster

Tuesday, March 20, 2007, 16:30–18:30, Poster B

Superradiant Rayleigh scattering in a high finese ring cavity — •Gordon Krenz, Sebastian Slama, Simone Bux, Claus Zimmermann, and Philippe Courteille — Physikalische Institut, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

We study the collective interaction of light with ultracold rubidium atoms. We are interested in the sudden build-up of a reverse light field in a laser-driven high-finesse ring cavity filled with ultracold thermal or Bose-Einstein-condensed atoms. While superradiant Rayleigh scattering from atomic clouds is normally only observed at very low temperature (1 µK), the presence of a ring cavity enhances cooperativity and allows for superradiance with thermal clouds as hot as several 10 µK. A characterization of the superradiance at various temperature and cooperativity parameters allows us to link it to the collective atomic recoil laser (CARL).