Effect of Chromophore Structure of Azo Dyes on Their Diffraction Efficiency in Polarization Holograms of Recording Media

摘要

Recording media for polarization holography derived from styrene copolymer films with octyl methacrylate and azobenzene and azonaphthol dyes have been prepared and their informational properties have been studied. We are the first to show that when the orientation of the recording beams changes from parallel to orthogonal, the diffraction efficiency of the holograms increases when using azobenzene and decreases when using azonaphthol. The observed effect of the dependence of the diffraction efficiency on the structure of the chromophores is attributed to the breakdown of symmetry of the chromophore upon going from azobenzene to azonaphthol dye.