Volume Holographic Material for Red Spectral Range Based on Polymer with Anthracene Side Groups

The possibility of volumetric phase recording based on photo-oxidation the side anthracene groups a new polymer with glass transition temperature ~338 K by oxygen that enters layer across boundary atmospheric medium, was established experimentally. Volumetric holographic gratings maximum diffraction efficiency 2.5–9.5% were recorded radiation from He–Ne laser (λ = 633 nm) in layers 5–20-μm thick. It shown thicker than 10 μm is limited saturation growth modulation depth optical path difference. This effect due to increase radius photorefraction sphere around photosensitizer molecule increased photoconversion groups, which lowers resolution grating and its effective thickness.