New Approach for Preparation of Photopolymerizable Holographic Recording Materials
【摘要】：正A new method was applied for the preparation of photopolymerizable holographic recording materials. The holographic hybrid sol-gel material with excellent values of diffraction efficiency, index modulation and high photosensitivity (up to 95%, 10-3, and 6×10-3 cm2/mJ, respectively) is reported. In addition, a high angular selectivity has been achieved (θ = 0.0967°) through the selection of the adequate nanoporous silica-supporting matrix. Such a value has allowed to first demonstrating the capability of angular multiplexing in a holographic sol -gel media. Shrinkage during UV curing processes has also been determined in order to investigate how accurate can be the retrieval of the recorded data.