0000000001078231

AUTHOR

Irina V. Semenova

showing 2 related works from this author

Hologram development by diffusion in a polymer glass

2003

Thick rigid polymer media with diffusive development of gratings are suitable for archive information storage, and especially for 3D holographic optical elements. Diffusion of unreacted molecules of photosensitive dye ensures postexposure growth of diffracted light, which can be followed either by secondary growth, or by some decay caused by displacement of chromophore groups photochemically attached to polymer chains (photoproduct). In a long run, extremely slow, though still finite, diffusion of macromolecules leads to destruction of a holographic grating. Not only the rate, but also the shape of postexposure kinetics noticeably depends on the choice of particular polymer, its degree of p…

Diffractionchemistry.chemical_classificationMaterials sciencegenetic structuresHolographic gratingbusiness.industryDiffusionHolographyPolymerDegree of polymerizationChromophorelaw.inventionOpticschemistryPolymerizationlawChemical physicsbusinessSPIE Proceedings
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Rigid polymer materials with hologram enhancement by molecular diffusion

2003

The principle of diffusional enhancement has been embodied in the rigid glassy polymer with phenanthrenequinone able to photochemically attach to surrounding macromolecules, thus forming a permanent grating. Owing to material stiffness, it does not suffer from shrinkage and can be made very thick; serving a basis for very stable spectrally selective elements. Replacement of commonly used acrylic glass by polycarbonate ensures further significant improvement of performance and stability of 3D holographic optical elements and memories.

chemistry.chemical_classificationMolecular diffusionMaterials sciencebusiness.industryHolographyPolymerGratingHolographic data storagelaw.inventionPhotopolymerOpticschemistrylawvisual_artvisual_art.visual_art_mediumPolycarbonateComposite materialbusinessShrinkageSPIE Proceedings
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