Generating Properties of Waves at the Resonant Frequencies of a Transparent Nonlinear Layer

By means of example of an absolutely transparent nonlinear layer in the linear approximation (with a linear component of the dielectric permittivity being equal to one), the effect of the predominant conversion of the excitation field energy into the energy of the generated and transmitted third harmonic field is demonstrated. The resonant excitation frequency (fundamental frequency) is chosen equal to the real part of the corresponding eigenvalue of the induced spectral problem.