Generation of high-order optical vortices using directly machined spiral phase mirrors

TL;DR

This paper demonstrates a method for generating high-order optical vortices using directly machined spiral phase mirrors, enabling high-quality vortex production with high topological charges at 532 nm wavelength.

Contribution

It introduces a direct machining technique for creating spiral phase mirrors capable of producing high-order optical vortices with topological charges up to 1000.

Findings

High-quality vortices with topological charges from 1 to 1000 produced

Direct machining offers high precision and large-diameter mirrors

Compatible with high optical powers

Abstract

We report on the generation of high-order optical vortices by spiral phase mirrors. The phase mirrors are produced by direct machining with a diamond tool and are shown to produce high-quality optical vortices with topological charges ranging from 1 to 1000 at a wavelength of 532 nm. The direct machining technique is flexible and offers the promise of high-precision, large-diameter spiral phase mirrors that are compatible with high optical powers.