Observation of cold atom output from an evanescent-light funnel

Abstract

We report the demonstration of an atom funnel composed of evanescent light. The flux intensity of cold Rb atoms output from a 240μm exit hole was 7×107atom∕cm2s at a blue detuning of 1.2GHz. Sisyphus cooling doubled the output efficiency. The estimated flux intensity was 1012atom∕cm2s when the exit-hole diameter was 110μm.

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