Abstract

We present the demonstration of high-gradient laser acceleration and deflection of electrons with silicon dual-pillar grating structures using both evanescent inverse Smith–Purcell modes and coupled modes. Our devices accelerate subrelativistic 86.5 and 96.3 keV electrons by 2.05 keV over 5.6 μm distance for accelerating gradients of 370 MeV/m with a 3 nJ mode-locked Ti:sapphire laser. We also show that dual pillars can produce uniform accelerating gradients with a coupled-mode field profile. These results represent a significant step toward making practical dielectric laser accelerators for ultrafast, medical, and high-energy applications.

© 2015 Optical Society of America

Phase-dependent laser acceleration of electrons with symmetrically driven silicon dual pillar gratings

Kenneth J. Leedle, Dylan S. Black, Yu Miao, Karel E. Urbanek, Andrew Ceballos, Huiyang Deng, James S. Harris, Olav Solgaard, and Robert L. Byer
Opt. Lett. 43(9) 2181-2184 (2018)

Laser acceleration and deflection of 96.3  keV electrons with a silicon dielectric structure

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Dielectric laser electron acceleration in a dual pillar grating with a distributed Bragg reflector

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Surface treatments of dielectric laser accelerators for increased laser-induced damage threshold

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Opt. Lett. 45(2) 391-394 (2020)