Sloping incident of the light on the super-lattice

An exact expression for the coefficient of the light reflection during the sloping incident on the super-lattice has been found, which is a periodical repetition of 2 layers with refraction indexes $n_1$ and $n_2$. The conditions of total reflection for s- and p-waves have been obtained. It is shown that the corresponding selection of $n_1$ and $n_2$ and the frequency of the incident light in the absence of refraction from the super-lattice is possible, and, in particular, Brooster’s angle is found.