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Resonator-Enhanced Optical Dipole Trap for Fermionic Lithium Atoms

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

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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A. Mosk, S. Jochim, H. Moritz, Th. Elsaesser, M. Weidemueller, R. Grimm. 2001-07-17. Resonator-Enhanced Optical Dipole Trap for Fermionic Lithium Atoms. https://doi.org/10.1364/ol.26.001837

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