Holographic gratings in photosensitive film on surface of crystal ZnS substrate

A new method of preparation of holographic gratings based on the usage of the one laser beam is proposed. The beam was incident on the photosensitive thin film deposited on the ZnS crystal surface. The ZnS crystals have a defective structure and consist of alternating regions of the hexagonal and cubical modifications that are thin interlayers, perpendicular to the boundaries of a plate.