<title>New holographic recording materials based on dual-cure photopolymer systems</title>

Abstract

The limitation of the holographic sensitivity of photopolymer materials mostly result from an imbalance between photocrosslinking copolymerization and mass transfer processes. The development of new blends containing acrylate and vinyl ether monomers which undergo hybrid-cure polymerization, makes it possible to evade some of the typical shortcomings of multiacrylate formulations resulting thereof. Self-processing materials exhibiting an holographic sensitivity of up to 200 cm²/J and an energetic sensitivity below 20 mJ/cm² are reported. The improvement of the reciprocity between exposure and holographic intensity opens up attractive prospects for applications requiring holographic exposure shorter than 0.5 second.