PHOTOPOLYMER RECORDING MEDIA FOR THREE-DIMENSIONAL OPTICAL MEMORY FOR VERY-LARGE-SCALE INFORMATION CAPACITY Russian patent published in 2008 - IPC G03F7/31 G03F7/28 G03F7/33 G02B5/32 

FIELD: physics.

SUBSTANCE: invention pertains to organic light sensitive recording media and can be used for making archival three-dimensional holographic optical memory with large scale information capacity. The photopolymer recording medium is described. It consists of solid triplexed polymer films or glass plates and light-sensitive layer between them, including unsaturated compounds, which are capable of ion-radical photopolymerisation; a system providing for photoactivation through radiation in the 400-600nm range and consisting of photochromic compounds and co-initiator. The light sensitive layer contains photochromic compounds with a long mean life of the photo-induced state or thermal irreversible photochromic bonds, and not necessarily, polymer binder, plasticizer and non-polymerisation organic liquid with a large refractive index. There is also proposed usage of such a recording medium in devices for three-dimensional holographic memory of large scale capacity.

EFFECT: design of three dimensional holographic optical memory of large scale information capacity and simplification of the optical device for recoding holograms.

9 cl, 12 tbl, 57 ex, 1 dwg