Depth-controlled Bessel beams

TL;DR

This paper introduces a novel liquid crystal ring aperture device that enables three-dimensional control of Bessel beams, maintaining coherence and beam structure for advanced optical applications.

Contribution

It presents a new liquid crystal-based design for independently switchable segments that control Bessel beams in three dimensions.

Findings

Preserves coherence of Bessel beams

Enables 3D control of beam structure

Demonstrates effective beam generation

Abstract

We present a ring aperture with independently switchable segments for the three-dimensional control of quasi propagation invariant beams. We demonstrate that our liquid crystal design concept preserves coherence and generates the Bessel beam structure.