THz surface electromagnetic waves in multilayer periodic semiconductor-dielectric structure

The properties of terahertz surface waves (SW´s) in the finite semiconductor-dielectric periodic structure in an external magnetic field were investigated. The band structure of the considered periodic material was analyzed (Fig. 1). Analytical and numerical calculations of the dispersion relation for SW´s were carried out. The distribution of electromagnetic field and the energy flow of SW´s were studied. We also analyzed the properties of SW´s in the considered structure in the subwavelength approximation (effective medium approximation).