Long-range optical pulling force device based on vortex beams and transformation optics

TL;DR

This paper presents a novel device that uses vortex beams and transformation optics to generate a long-range optical pulling force, with simulations confirming its effectiveness and agreement with theoretical predictions.

Contribution

It introduces a new method combining vortex beams and transformation optics to produce long-range optical pulling forces, advancing optical manipulation technology.

Findings

Device successfully transforms vortex beams into non-paraxial plane waves.

Simulation results match theoretical calculations closely.

The method enables effective long-range optical pulling forces.

Abstract

In this work a method for generating a long-range optical pulling force is presented which is realized by utilizing a vortex beam and a device designed based on transformation optics through conformal mapping. The device works by transforming an input perfect vortex beam into an almost non-paraxial plane wave, and generates a pulling force by maximizing the forward momentum of the beam. A three-dimensional full-wave analysis of the device is performed and the optical force is computed by the Maxwell stress tensor method. The simulation results show a very good agreement with the theoretical calculations.