PHOTOPOLYMERIZABLE MATERIAL FOR HOLOGRAPHIC RECORDING IN THE 450-550 NM DOMAIN

The photopolymerizable recording media, can be used to record holographic patterns produced by laser sources emitting from 450 to 550 nm. The polymerization takes place only in the bright areas corresponding to the regions of constructive interference and volume phase holograms are created. Diffraction efficiencies of 50% are recorded with an index modulation of 2*10-3. Optimum exposure is typically 300 mJ/cm2 and the upper limit for spatial frequencies is higher than 3000 lines/mm.