Topological Charge Inversion of Optical Vortex with Geometric Metasurfaces

Abstract

The topological charge (TC) inversion of optical vortex is demonstrated along the beam propagation direction by using plasmonic geometric metasurfaces with the initial wave fronts designed from the principle of caustic surface. The detailed TC inversion evolution process is observed together with the transmutation point where the vortex vanishes. The orbital angular momentum (OAM) mode distributions during the TC inversion process are studied to show the dynamic redistributions of OAM mode density between the central area and the surrounding area of the beam with the total OAM conserved. Furthermore, the TC inversion of self‐accelerating vortex beam along the parabolic trajectory is presented. The realization of controlling TC inversion of optical vortex along arbitrary beam trajectory paves the way for many applications with more complex functionalities in optical trapping and manipulation, optical sensing, quantum information and computation, and data communication.

Document Details

Document Type
Pub Defense Publication
Publication Date
Jan 27, 2019
Source ID
10.1002/adom.201801486

Entities

People

  • Jie Gao
  • Xiaodong Yang
  • Yuchao Zhang

Organizations

  • Missouri University of Science and Technology
  • National Science Foundation
  • Office of Naval Research

Tags

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Wave Propagation and Nonlinear Chaotic Dynamics.

Technology Areas

  • Quantum Computing
  • Space