ELIMINATION OF OXYGEN INHIBITION IN PHOTOPOLYMER SYSTEMS USED AS HOLOGRAPHIC RECORDING MATERIALS

One of the problems involved in increasing photopolymer sensitivity, i s oxygen inhibition. In this paper we present a photochemical process in which a two dye-sensitizer in the photoinitiator system leads to th e suppression of the inhibiting effect of the oxygen. Additionally, th e photochemical system presents the possibility of a panchromatic syst em with light sensitivity in the green and red lines. Diffraction effi ciencies of 40% in the 514 and 633 nm lines are obtained with a sensit ivity of less than 10 mJ cm-2 .