Holographic recordings in xanthene dye dichromated colloid films for engineering applications

The goal of the author´s is to introduce characteristic results of real time hologram recordings in dichromated casein films. All of those results were obtained in real-time holography and the recording films were free of any chemical or thermal development and repositionning before playing back the recorded information. Dichromated colloid films give high diffraction efficiency (η) in the red band when written with violet-blue radiation of an helium-cadmium laser. This experimental study concerns the photocrosslinking of dichromated dye casein films studied in the blue-violet region (442 nm) of the optical spectrum