Optical activity of imperfect 1D superlattices with vacancies in impurity layers

The concentration dependence of the specific rotation angle of a gyrotropic photonic crystal (imperfect 1D superlattice with an arbitrary number of sublattices one of which (potassium dithionate K$_2$S$_2$O$_6$) is optically active) is numerically simulated. Specific gyrotropic features of the photonic crystal related to the random substitution of layers of a model molecular crystal with vacancies for the layers of the K$_2$S$_2$O$_6$ sublattice are revealed using microscopic analysis of the specific rotation angle of the optical polarization in the molecular crystal with a primitive lattice in the exciton spectral range.