Photonic hook: A new curved light beam

TL;DR

This paper introduces the photonic hook, a novel curved light beam generated by dielectric particles, expanding the understanding of light propagation beyond traditional straight-line and Airy beam behaviors.

Contribution

The paper presents the discovery and explanation of the photonic hook, a new type of curved light beam created by dielectric particles, distinct from previously known Airy beams.

Findings

Photonic hook is a high-intensity curved focus.

Phase velocity differences cause focus bending.

Photonic hook broadens control over light propagation.

Abstract

It is well-known that electromagnetic radiation propagates along a straight line, but this common sense was broken by the artificial curved light - Airy beam. In this paper, we demonstrate a new type of curved light beam besides Airy beam, so called photonic hook. This photonic hook is a curved high-intensity focus by a dielectric trapezoid particle illuminated by a plane wave. The difference of the phase velocity and the interference of the waves inside the particle cause the phenomenon of focus bending.