Work

Optical force conversion and conveyor belt effect with coupled graphene plasmon waveguide modes

Year: 2023

Type: article

Abstract: We propose a double-layer graphene sheets side coupling to a strip of graphene to obtain the optical pulling or pushing force. Combined with coupled mode theory and finite-difference time-domain simulations, it is found that the conveyor belt effect can be realized in conjunction with the lateral optical equilibrium effect upon the radiation loss κ e equal to the intrinsic loss κ o . The maximum total optical force acting on the strip in the symmetric mode (S-mode) can be up to ∼5.95 in the unit of 1/ c and the anti-symmetric (AS-mode) mode reach ∼2.75 1/ c . The optical trapping potential U x and optical trapping force F x for the S-mode have a value around -22.5 k B T/W and 240 pN/W, while for the AS-mode can up to ∼-56 k B T/W and 520 pN/W, respectively. Our work opens a new avenue for optical manipulation with potential applications in optoelectronic devices and lab-on-a-chip platforms.

Source: Optics Express

DOI: 10.1364/oe.495863

Authors: Hao-yu Wang, Rui Ma, Gui-dong Liu, Ling-ling Wang, Qi Lin

Institution: Hunan University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hunan Province