Plasmonic electron acceleration with the meta-surfaces

A mechanism for electron acceleration by spoof surface-plasmons (SSP) is proposed. By using a specially designed meta-surface with gradient structural size, the SSP and electrons can be accelerated simultaneously along the surface, which gives rise to a long-range and efficient electron-SSP interaction. Compared with the homogeneous meta-surfaces, the increment of electron kinetic energy, similar to 19 keV, is enhanced by two orders of magnitude. The effect may be valuable for developing efficient plasmonic electron accelerators. Published by AIP Publishing.