Hologram record by means of film anisotropy photoinduction.

The diffraction efficiency of a hologram in crossed polarizers, recorded by means of photoinduction of the optical anisotropy in a film with a different orientation of the polarization planes of interfering plane waves, is studied. The dependence between the diffraction efficiency of the hologram and the angle of orientation against the optical axis of the analyzer is determined both theoretically and experimentally. The theoretical calculations are based on the assumption that the photoinduction of anisotropy is due to the formation of anisotropic grains following exposure to light and only the concentration of grains is a function of exposure. The experimental results, referring to azo-dye-colored films, are in good agreement with the theoretical results of the given work.