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

IWTCP-2; NCTP-39

Lan, Nguyen Thi Phuong^1 ; Nga, Dao Thi Thuy^2 ; Viet, Nguyen Ai^3

Hanoi Pedagogical University, No.2, Nguyen Van Linh Street, Phuc Yen Town

Vinh Phuc Province, Viet Nam^1

Han Thuyen High School, Bac Ninh City

Bac Ninh Province, Viet Nam^2

Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Thu Le, Ba Dinh, Ha Noi, Viet Nam^3

关键词: Bessel beam;    Cold atoms;    Opticaltrapping;    Phase singularities;    Planar surface;    Z-directions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/627/1/012017/pdf
DOI  :  10.1088/1742-6596/627/1/012017

来源: IOP

【 摘 要 】

When a laser Bessel beam light is totally reflected 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. Efficiency 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.