Diffraction on Layered Dielectric Structure with Weakly Kerr-Like Nonlinearity

Numerical analysis of the diffraction by a transversely non-homogeneous, isotropic, nonmagnetic, linearly polarized, weakly nonlinear layered dielectric structures (with Kerr-like nonlinearity) is performed in the resonant frequency range when the parameter of cubic susceptibility takes positive and negative values. It is shown that as the excitation field intensity increases the diffraction characteristics acquire essentially different properties for positive and negative values of susceptibility. For a layered structure consisting of layers with positive and negative susceptibility of the enveloping medium the effects inherent to environments with positive and negative value of susceptibility are observed in certain areas of variation of the excitation field intensity