| 摘要 |
PURPOSE:To obtain a volume-phase hologram exhibiting high diffraction efficiency and having excellent environmental resistance and durability by using an inorg. network obtained from an organometallic comp. soln. by the sol-gel method. CONSTITUTION:A photopolymerizable monomer or oligomer contg. a photopolymerization initiator is added to an organometallic compd. soln. contg. solvent, water and catalyst, agitated and mixed to coat a substrate. The hydrolysis and polycondensation of the compd. proceed thereafter to form an inorg. network, and sol is converted to gel. As the drying continues, the solvent and water in the network are vaporized, and the monomer or oligomer is distributed in the network over the entire film. As a result, contraction by polymerization is reduced in the interference-fringe recording, the optical characteristic and diffraction efficiency are improved, and the environmental resistance and mechanical characteristic are improved since the network consists of an org.-inorg. composite. |
