Abstract
We describe a practical atomic waveguide using a cylindrical-core hollow fiber. Theoretical analyses of propagating field modes are presented for a multimode fiber. An evanescent wave leaked out to the hollow region is shown to produce a deep optical potential enough to guide atoms with low coupling laser power under an optimal blue-detuning determined by fiber parameters, exciting mode and aximuthal angle. The excitation of an HE 11 mode required for stable atomic guidance in the multimode hollow fiber is experimentally realized with the power-coupling efficiency of more than 10%.
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