<title>Holographic photopolymer in hybrid sol-gel matrix</title>

Abstract

The investigation of the casting and properties of the holographic photopolymer material in hybrid organic-inorganic binder with thickness 0.4-1 mm is described. The hybrid matrix formation was carried out by synthesis of N-vinylpyrrolidone vyniltriethoxysilane co-polymer and subsequent hydrolytic condensation of this co-polymer with tetraethoxysilane pre-sol. It is shown the possibility of formation of stable to crack the solid volume hybrid matrix at ratio pre-sol:co-polymer 1:4. Recording of transient and reflection holograms in hybrid 0.46 mm thickness photopolymer material was carried out. Angle selectivity of the transient hologram was 0.17° and shrinkage of material, measured by changing of Bragg condition of transient hologram didn't exceed 0.7%. The obtained holographic properties were improved on the order of value in comparison with photopolymer material in organic polymer binder.