Аннотация:With the help of numerical simulation we calculated the reflection of light beams with different angular spectra from a chirped dielectric structure and demonstrate that the general lateral shifts of reflected beams with the narrow spectral width depend on the positions of the photonic barrier in the quasi-periodic structure. Focusing and defocusing of light beams with wide angular spectra are shown. We also discuss the efficiency of volume chirped grating application for the compressing and stretching of light beams with small angular divergence.