Organic storage media for holographic optical memory: State-of-the-art and future

At present the main application of holography is the development of holographic optical memory with the super high information capacity. Recent advantages in decision of a number of technical problems associated with making holographic optical devices brought to the fore the question of the development of light-sensitive media for recording deep holograms. This paper presents the comparative analysis of the results concerning organic light-sensitive media of different types (photopolymerizable compositions, dichromated gelatin layers, photorefractive and photoanisotropic materials, etc.). It was shown that there are perspectives of the development of polymerizable materials based on photobleaching photochromogenic and photochromic photoinitiators for archive optical memory with high information capacity. The possibility of the development of working optical memory with the same information capacity is associated with expected advances in making photoanisotropic polymers containing photochromic fragments.