Improvement of the technology for manufacturing relief holographic gratings on dichromated gelatin irradiated with short-wave UV radiation

A new variant of manufacturing high-frequency holographic gratings with a spatial frequency up to 1500 mm -1 on layers dichromated gelatin (DCG), in the processing technology which water procedures are completely excluded, is proposed. The method based use glacial acetic acid after photodestruction by exposure short-wave UV radiation instead standard structures registered coherent He-Cd laser radiation. In course experiments, relief-phase high diffraction efficiency 64% were obtained, regardless thickness DCG layers. Keywords: gratings, gelatin, radiation, surface relief, efficiency, acid, isopropanol.