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

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–electroninteraction to 1 mm.