Physics – Atomic Physics
Scientific paper
2007-06-13
Appl. Phys. B 89, 181 (2007), 6 pages
Physics
Atomic Physics
7 pages, 7 figures
Scientific paper
10.1007/s00340-007-2793-5
The combination of ultra-cold atomic clouds with the light fields of optical cavities provides a powerful model system for the development of new types of laser cooling and for studying cooperative phenomena. These experiments critically depend on the precise tuning of an incident pump laser with respect to a cavity resonance. Here, we present a simple and reliable experimental tuning scheme based on a two-mode laser spectrometer. The scheme uses a first laser for probing higher-order transversal modes of the cavity having an intensity minimum near the cavity's optical axis, where the atoms are confined by a magnetic trap. In this way the cavity resonance is observed without exposing the atoms to unwanted radiation pressure. A second laser, which is phase-locked to the first one and tuned close to a fundamental cavity mode drives the coherent atom-field dynamics.
Bux Simone
Courteille Philippe W.
Krenz Gordon
Slama Sebastian
Zimmermann Claus
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