Organic frequency - Selective recording media

The analysis of the results of the study in the field of organic recording media for making of frequency - selective optical memory is presented. Among these media are polymolecular films based on cyanine dyes and photoinduced merocyanine molecules of photochromic spirocompounds capable to form J - aggregates. Besides, media manifesting hole photoburning at low temperatures are reviewed too because of their prospect of the development for frequency - selective optical memory with extreme information capacity.