Berlin 2005 – scientific programme
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Q: Quantenoptik und Photonik
Q 64: Quantengase IV
Q 64.3: Talk
Wednesday, March 9, 2005, 11:30–11:45, HU Kinosaal
Making ground state molecules with optical Feshbach resonances — •Christiane Koch1,2, Ronnie Kosloff2, and Françoise Masnou-Seeuws1 — 1Laboratoire Aimé Cotton (CNRS), Campus d’Orsay, Bât. 505, 91405 Orsay Cedex, France — 2Department of Physical Chemistry and The Fritz Haber Research Center, The Hebrew University, Jerusalem 91904, Israel
Molecular Bose-Einstein condensates (BEC) have recently been created by adiabatically sweeping over magnetic Feshbach resonances. Unfortunately, Feshbach resonances are not always available at magnetic field strengths which can easily be handled in experiment. We therefore investigate the possibility to create molecules using the optical analogue of the Feshbach resonance in which a laser couples the open and closed channels. We discuss how intensity and detuning of the laser need to be chosen to avoid loss due to spontaneous emission and to create molecules directly in the ground state. Our simulations for 87Rb show that this scheme to create ultracold molecules works for sufficiently tight traps.