SURFACE AND GUIDED-WAVE POLARITON MODES OF MAGNETOPLASMA EFFECTIVE FILMS IN THE VOIGT GEOMETRY

A theoretical discussion of the retarded electromagnetic modes of an e ffective magnetoplasma film is described. The effective film is charac terized by an effective dielectric tenser, and we deal with the Voigt configuration (propagation transverse to the applied magnetic field) f or both a symmetric and an asymmetric film. The numerical results show that for a symmetric effective film, dispersion curves for both surfa ce modes and guided waves are reciprocal, omega(+k) = w(-k), but the f ield profiles are different for +k and -k. The dispersion curves for t he asymmetric effective film are non-reciprocal, and the field profile s are different. Numerical illustrations are given for a GaAs/AlAs sup erlattice.