Three-dimensional dielectric photonic crystal structures for laser-driven acceleration

TL;DR

This paper introduces a novel 3D photonic crystal waveguide design for laser-driven acceleration, demonstrating efficient beam confinement and acceleration with minimal emittance growth through innovative optical focusing techniques.

Contribution

It presents a new 3D photonic crystal structure and a novel optical beam confinement method for laser-driven acceleration in vacuum.

Findings

Achieves sustainable acceleration gradients and high optical-to-beam efficiency.

Demonstrates large dynamic aperture and minimal emittance growth.

Introduces a new technique for optical beam confinement using photonic structures.

Abstract

We present the design and simulation of a three-dimensional photonic crystal waveguide for linear laser-driven acceleration in vacuum. The structure confines a synchronous speed-of-light accelerating mode in both transverse dimensions. We report the properties of this mode, including sustainable gradient and optical-to-beam efficiency. We present a novel method for confining a particle beam using optical fields as focusing elements. This technique, combined with careful structure design, is shown to have a large dynamic aperture and minimal emittance growth, even over millions of optical wavelengths.