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Evaporative cooling of cesium atoms in the gravito-optical surface trap

M. Hammes·D. Rychtarik·R. Grimm
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Abstract

We report on cooling of an atomic cesium gas closely above an evanescent-wave. Our first evaporation experiments show a temperature reduction from 10muK down to 300nK along with a gain in phase-space density of almost two orders of magnitude. In a series of measurements of heating and spin depolarization an incoherent background of resonant photons in the evanescent-wave diode laser light was found to be the limiting factor at this stage.

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M. Hammes, D. Rychtarik, R. Grimm. 2000-12-27. Evaporative cooling of cesium atoms in the gravito-optical surface trap. https://arxiv.org/abs/physics/0012058

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