Mechanisms of the formation of the Bragg reflection spectra of light from two-dimensional photonic crystals have been studied in terms of an approach based on dynamic diffraction theory. The spectra have been calculated for a structure with a hexagonal silicon-based lattice. The calculated reflection contours are compared with the energy spectra of the eigenmodes of a spatially limited photonic crystal. It is demonstrated for the first time that it is possible to observe multiwave diffraction effects in the optical spectra of two-dimensional photonic-crystal structures.
© 2012 OSA
Original Manuscript: May 4, 2012
Published: August 31, 2012
V. G. Fedotov and A. V. Sel’kin, "Bragg reflection of light from silicon-based two-dimensional photonic crystals under multiwave-diffraction conditions," J. Opt. Technol. 79, 524-526 (2012)