On Resonance Diffraction of High Frequency Radiation at Periodically Corrugated Semiconductor Surfaces

We show that resonance features analogous to the well known in optics Wood-type anomalies can be observed at THz range on a periodically profiled surface of a high doped semiconductor at low temperatures. The anomalies are caused by surface plasmon polariton excitation at diffraction on the surface. The results are of interest both from physical viewpoint and in view of wide field of possible applications in nowadays information technologies