Surface Electromagnetic Waves at the Interface of Two Anisotropic Media

The article discusses the existence of surface electromagnetic wave at the interface of a structure formed by two identical anisotropic media, each of which is rotated in opposite directions at an angle relative to the desired direction of propagation of electromagnetic wave. Earlier, in the pioneering papers on the subject Diakonov M.I. and Averkiev N.S. (1988, 1990) considered only uniaxial anisotropic media. This article presents calculations for the general case of biaxial media. In a particular case, the obtained results describe a case of uniaxial media. The paper does not use any approximation, except, perhaps, the concept of plane waves. Exact analytical expressions were obtained, which relate the values of the phase velocity of the surface wave with an angle of rotation of the axes of symmetry of anisotropic media relative to the direction of the wave vector of the surface wave. In addition, the transverse distributions of the fields of such a wave were found, and these distributions uniquely characterizes this wave as surface wave.

surface electromagnetic wave, anisotropic medium, phase velocity, transverse distribution of the field, dielectric tensor