Quasi-optical Theory of Surface Wave Formation at Corrugated Metallic Surfaces and Its Interaction with Relativistic Electron Beams

We present here an overview of a theoretical approach that proved to be a valuable instrument for studying the wave propagation near the corrugated structures in oversized systems. Combining the surface magnetic current technique and the quasi-optical theory methods, we construct a model capable of description of multiple experimental systems. We report of a number of novel devices which are under development based on the theoretical model. PIC validation of the results obtained and some experimental results are also presented.