Programme

P.26 -- Poster, NCTP-39

Date: Wednesday, 30-07-2014

Time: 14h00 - 15h30

A model of optical trapping cold atoms by using surface plasmon effect with singularities generated by evanescence Bessel beams

Nguyen Thi Phuong Lan (1), D.T. Thuy Nga (2), Do T. Nga (3) and N.A. Viet (3)

(1) Hanoi Pedagogical University No.2; (2) Han Thuyen High School; (3) Institute of Physics

When a laser Bessel beam light is totally reflected 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. Efficiency of the trap will be presented by a circle of radius r in the (x, y) directions and the distance d from planar surface in the z-direction.

Presenter: Nguyen Thi Phuong Lan