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Abstract
A new photopolymerizable recording media is introduced based on poly (vinyl alcohol) and vinyl acetate sensitized with methylene blue. It is observed that this MBPVA/VAc system can be reused a number of times without significant decrease in diffraction efficiency. The PVA-VAc ratio was optimized at 2:1. Diffraction efficiency of 6.3% was obtained without any fixing at a dye concentration of 9.3 × 10−4 mol/l at an exposure of 750 mJ/cm2. The material is attractive on account of its reusability.
Acknowledgment
We thank DRDO for financial support of this work.