Orbital angular momentum tuning using a phase only parallel aligned LCoS display

TL;DR

This paper introduces two methods for continuously tuning orbital angular momentum using a phase-only liquid crystal display, with simulations demonstrating potential applications in optical manipulation.

Contribution

It presents novel schemes for orbital angular momentum control via polarization adjustments on a simple LCoS device, enabling complete and continuous tuning.

Findings

Simulated optical force fields show effective particle manipulation.

The proposed methods allow for precise OAM tuning by polarization control.

Potential applications in optical tweezers and particle manipulation.

Abstract

We propose two schemes for achieving continuous and complete orbital angular momentum tuning using a simple device based on a phase only parallel aligned liquid crystal on silicon display, where the tuning is managed by changing the input beam state of polarization. We use an optical tweezers toolbox to simulate the optical force field of the tuned beams applied to dielectric spherical particles in order to prove the applicability of the method.