Holographic gratings recording in synthetic dye of system PVA and cupric chloride

Comparative analysis between gratings registered in cupric chloride and cupric chloride films, with synthetic dye is presented. Preliminary results of recorded holographic diffraction gratings are shown, in which the polyvinyl alcohol mixed with a photosensitizing agent, cupric chloride and synthetic dye. The gratings were recorded using laser diode at a wavelength of 445 nm. Experimental results of gratings registered with cupric chloride and synthetic dye showed higher diffraction efficiency than those registered in cupric chloride.