# 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.

## Key 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.

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Source: https://tomesphere.com/paper/1901.02130