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In situ characterization of an optical cavity using atomic light shift

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arxiv 1007.2721 v2 pith:NZZZDWDL submitted 2010-07-16 physics.atom-ph

In situ characterization of an optical cavity using atomic light shift

classification physics.atom-ph
keywords opticalpotentialcavityatomscharacterizationlaserlightobtained
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report the precise characterization of the optical potential obtained by injecting a distributed-feedback erbium-doped fiber laser (DFB EDFL) at 1560 nm to the transversal modes of a folded optical cavity. The optical potential was mapped in situ using cold rubidium atoms, whose potential energy was spectrally resolved thanks to the strong differential light shift induced by the 1560 nm laser on the two levels of the probe transition. The optical potential obtained in the cavity is suitable for trapping rubidium atoms, and eventually to achieve all-optical Bose-Einstein condensation directly in the resonator.

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