High-density and high-quality holographic storage in a multilayer glass-like photopolymer

We reveal that polymerization degree is a significant factor that affects the holographic properties of glass-like photopolymer. By modulating polymerization degree, as well as changing the photosensitizer concentration, we fabricate multilayer PQ/PMMA photopolymer, exhibiting excellent performances in storage fidelity and reproduction resolution. A reflection geometry holographic disk system is established using the multilayer sample, in which a high storage density of 40.5GB/cm(3) is realized. The reproduced images exhibit high quality with an average diffraction efficiency of 7.4 x 10 (-4) and average peak SNR of 27.4. This study provides a paradigm for the fabrication and holographic application of other photopolymers. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

We demonstrate the significance of polymerization degree on the holographic properties of glass-like photopolymer. Through modulation of polymerization degree and photosensitizer concentration, a multilayer PQ/PMMA photopolymer with excellent storage fidelity and reproduction resolution is fabricated. A reflection geometry holographic disk system is established using the multilayer sample, achieving high storage density and high-quality reproduced images.