OPTICAL WAVEGUIDE TYPE HOLOGRAPHIC MEMORY

摘要

A laminate of azobenzene polymer multilayer (8) is formed on a substrate. A hologram having a two-dimensional surface relief provided by photoisomerization reaction is recorded in each azobenzene polymer thin-film of the azobenzene polymer multilayer (8). In read-out of recorded information, any selected azobenzene polymer thin-film of the azobenzene polymer multilayer (8) is exposed to infrared radiation available through cylindrical lens (10) from laser beam source (9), so that the selected hologram (11) can be regenerated through read-out of the memory contents with visible light.