INTERFERENCE CHARACTERISTIC FEATURES OF THE TRANSMISSION OF OPPOSING WAVES THROUGH LAYERS WITH A COMPLEX REFRACTIVE-INDEX

The interference of two opposing coherent waves in a thin layer was st udied. Expressions for energy fluxes outside and inside the layer are obtained for normal incidence. It is shown that the interference flux, whose magnitude and direction vary markedly with layer parameters, am plitude and phase of incident waves may be derived together with incid ent, transmitted and reflected wave fluxes. The distribution of the to tal energy flux by thickness inside absorbing and amplifying layers wa s examined for single incident wave. The dependence of transmission an d reflection energy coefficients, T and R, on the thickness of a layer with negative absorption has been studied numerically in detail for t he case of normal incidence.