Optical design for increased interaction length in a high gradient dielectric laser accelerator

TL;DR

This paper introduces an optical design methodology to extend the laser-electron interaction length to 1mm in dielectric laser accelerators, enabling longer interaction regions for improved acceleration performance.

Contribution

The paper presents a novel optical design approach for pulse front tilt to increase interaction length in dielectric laser accelerators, which was previously limited to short coupling lengths.

Findings

Extended interaction length to 1mm achieved

Optical design for pulse front tilt demonstrated

Potential for higher gradients in dielectric laser acceleration

Abstract

We present a methodology for designing and measuring pulse front tilt in an ultrafast laser for use in dielectric laser acceleration. Previous research into dielectric laser accelerating modules has focused on measuring high accelerating gradients in novel structures, but has done so only for short electron-laser coupling lengths. Here we demonstrate an optical design to extend the laser-electron interaction to 1mm.