arXiv physics/01050092001-05physics.atom-ph

Resonator-Enhanced Optical Dipole Trap for Fermionic Lithium Atoms

A. Mosk, S. Jochim, H. Moritz, Th. Elsaesser, M. Weidemueller, R. Grimm

备注：: 4 pages 3 figures Revised 17.07.2001; Corrected calibration of noise measmt
发表信息：: Opt. Lett. 26, 1837 (2001).
DOI：: 10.1364/OL.26.001837

英文摘要：

We demonstrate a novel optical dipole trap which is based on the enhancement of the optical power density of a Nd:YAG laser beam in a resonator. The trap is particularly suited for experiments with ultracold gases, as it combines a potential depth of order 1 mK with storage times of several tens of seconds. We study the interactions in a gas of fermionic lithium atoms in our trap and observe the influence of spin-changing collisions and off-resonant photon scattering. A key element in reaching long storage times is an ultra-low noise laser. The dependence of the storage time on laser noise is investigated.

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