Relativistic Electron Beam Excitation of Surface Fields in Artificial Materials Based on One- and Two-Dimensional Periodic Structures

The understanding of the evolution of the electromagnetic (EM) fields on the surface of a metamaterial which mitigates the nonlinear nonstationary interactions between nonneutral plasmas such as relativistic electrons and EM fields is an important and challenging problem. Studies in this field have recently led to many breakthroughs in optics, vacuum electronics, and photonics. The realization of many ideas, as well as bridging the terahertz gap, is strongly linked to understanding and controlling the EM field's evolution inside and on the surface of artificial materials.