Abstract
In this paper, we present a photopolymerizable material in a sol-gel matrix suitable for recording a large number of multiplexed diffraction gratings with low total exposure energy. The matrix of this material is an inorganic porous silica glass, a material that does not shrink when radical photopolymerization is initiated. The photosensitive component is based on acrylamide, N,N′-methylenebisacrylamide, triethanolamine and yellow eosine as a photoinitiator. In the reported study, 50 holograms were angularly multiplexed with diffraction efficiencies between 0.1 and 1.9% resulting in a dynamic range of M/# = 3.9. The total exposure was 4.5 mJ/cm2 and the energy used in recording each hologram was 95 μJ/cm2. This indicates a very high sensitivity for this material in the range of 3.3 to 15.5 cm/mJ. Due to this good holographic performance, the material is suitable for holographic data storage applications.
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Murciano, A., Blaya, S., Carretero, L. et al. Hologram multiplexing in a highly photosensitive photopolymerizable material in a sol-gel matrix. Appl. Phys. B 81, 167–169 (2005). https://doi.org/10.1007/s00340-005-1889-z
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DOI: https://doi.org/10.1007/s00340-005-1889-z