Journal of Physics: Conference Series 627, 012017 (2015)

ISSN: 1742-6596

Trapping Cold Atoms Using Surface Plasmons with Phase Singularities Generated by Evanescent Bessel Beams

Nguyen Thi Phuong Lan, Dao Thi Thuy Nga and Nguyen Ai Viet

When a laser Bessel beam light is totally re ected internally at the planar surface of a dielectric on which a thin film has been deposited, a surface plasmons with phase singularities can be produced. This two-dimensional plasmons lead to an attractive potential with enhancement. Using this effect, we construct a model for optical trapping cold atoms. Effciency of the trap will be presented by an ellipse with average radius r in the (x; y) directions and the distance d from planar surface in the z-direction.

DOI: doi:10.1088/1742-6596/627/1/012017

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