Systematically Investigating the Structural Variety of Crystalline and Kaleidoscopic Vortex Lattices by Using Laser Beam Arrays

Hui-Chi Lin,Hsingchih Liang,Chengshang Chen,Chichen Jang,Yuhan Fang,Wenchi Chen

doi:10.3390/app11178018

Abstract

We theoretically demonstrate that a family of vortex-lattice structures can be flexibly generated using a multi-beam interference approach. Numerical calculation presents a variety of crystalline and kaleidoscopic patterns. Based on the numerical analysis, we experimentally realized these structure beams by combining an amplitude mask with multiple apertures and a spiral phase plate. The excellent agreement between the experimental and theoretical results not only validates the presented method, but also manifests the structure of vortex lattices.

Highlights

An optical vortex is the optical wavefront dislocation with the indeterminate wave phase and zero amplitude at a specific point
Optical vortex beams are attractive for numerous active fields and applications, such as optical tweezers [3,4], phase contrast imaging in microscopy [5], trapping and accelerating cooled atoms [6], quantum computation [7], and controlling the chirality of twisted nanostructures [8]
We provide a novel and convenient approach for generating various optical vortex arrays using a combination of an amplitude mask and a vortex phase plate

Summary

Introduction

An optical vortex is the optical wavefront dislocation with the indeterminate wave phase and zero amplitude at a specific point. A Fourier-transformed method with an amplitude mask was demonstrated for flexibly generating optical beams with crystal and quasicrystal structures [28,29]. Using the Fourier-transformed method to generate optical vortex arrays has not been explored in detail It is scientifically interesting as a way to provide a convenient and robust approach for realizing various optical vortex arrays. We provide a novel and convenient approach for generating various optical vortex arrays using a combination of an amplitude mask and a vortex phase plate. It turns out that by changing the vortex geometry of the spiral phase plate, such an optical structure can be converted into various optical vortex lattices. The excellent agreement between the experimental and theoretical results validates the present method, and manifests the structure of vortex lattices

Theoretical Analysis

Results and Discussion

Conclusions