PHOTOSENSITIVE GUEST-HOST POLYMER FOR OPTICAL-DATA STORAGE

Methylene blue sensitized poly(methyl methacrylate) prepared by the pr ocess of dye diffusion has been shown to be efficient medium for recor ding interference gratings. Phase and/or amplitude holograms can be wr itten in the methylene blue sensitized films of poly(methyl methacryla te) using a conventional source of light a Ke-Ne laser operating at 63 2.8 nm wavelength. Kinetics of photobleaching process of methylene blu e is measured. Diffraction efficiencies of up to 30% were found for th ick holograms. Phase conjugation and multiple holograms writing has be en tested in the studied system.