Metal-ion-doped polymer systems for real-time holographic recording

Metal ions such as Ferric [(Fe(III)] and Dichromate [Cr(IV)] have been used in conjunction with Polyvinyl alcohol for recording holograms in real time. Experiments have been performed to optimize the various parameters influencing the holographic performance of these materials. High real-time diffraction efficiency of 80% and 60% have been obtained in Ferric chloride Polyvinyl alcohol (FePVA) and Dichromated Polyvinyl alcohol (DCPVA), respectively.