Generation and propagation characterization of a vortex beam through an electro-optical crystal-based electrically controlled flat plate

TL;DR

This paper introduces a novel electrically controlled method using electro-optical crystals to generate and tune vortex beams, enhancing flexibility for applications in optical communication and manipulation.

Contribution

It presents a new approach leveraging the Pockels effect in flat plates for tunable vortex beam generation, surpassing traditional methods.

Findings

Simulation confirms accurate OAM-mode spectra

Method allows flexible wavelength and topological charge tuning

Potential for advanced optical communication applications

Abstract

With the increasing demand for potential applications in almost all fields in modern optics, the generation of vortex beams has attracted significant interest. Based on a flat plate made of electro-optical crystals, we propose an electrically controlling method to generate vortex beams assisted by the Pockels effect. Compared with traditional methods, our method allows flexibly tuning the wavelength and topological charge of the generated optical vortex beams. We simulate the propagation of optical beams transmitted from the flat plate and investigate the orbital-angular-momentum(OAM)-mode spectra of the transmitted optical beams. The OAM-mode spectra are in agreement well with the simulation results. The proposed method improves the flexibility of the generation of optical vortex beams, may gain more significant potential applications in optical communication and optical manipulation.