Optical pulling using topologically protected one way transport surface-arc waves

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations

Author(s)

  • Neng Wang
  • Ruo-Yang Zhang
  • Qinghua Guo
  • Guo Ping Wang
  • C. T. Chan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Number of pages9
Journal / PublicationPhysical Review B
Volume105
Issue number1
Online published13 Jan 2022
Publication statusPublished - Jan 2022

Abstract

Optical pulling is a counterintuitive phenomenon whereby light can pull particles against its propagation direction, but usually it is necessary to optimize both the incident beam and the manipulated particles. Here, we propose a robust optical pulling scheme using an air waveguide sandwiched between two chiral hyperbolic metamaterials carrying Weyl points. The pulling force is induced by mode conversion between two topologically protected chiral surface arcs supported on the two metamaterial surfaces of the waveguide. We prove that the optical pulling force is totally attributed to the Minkowski-type momentum of light and proportional to the wave-number difference between the two surface-arc waves, thus the pulling force is robust against the material, shape, and size of the particle. Thanks to the backscattering immunity of the surface-arc waves and the in-plane isotropy of the metamaterials, robust optical pulling can be achieved even in a curved waveguide, going beyond standard mechanisms of straight-line pulling.

Citation Format(s)

Optical pulling using topologically protected one way transport surface-arc waves. / Wang, Neng; Zhang, Ruo-Yang; Guo, Qinghua; Wang, Shubo; Wang, Guo Ping; Chan, C. T.

In: Physical Review B, Vol. 105, No. 1, 01.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review