Sensitivity-Enhancing Modified Holographic Photopolymer of PQ/PMMA
Junhui Wu,
Junchao Jin,
Po Hu,
Jinhong Li,
Zeyi Zeng,
Qingdong Li,
Jie Liu,
Mingyong Chen,
Zuoyu Zhang,
Li Wang,
Xiao Lin,
Xiaodi Tan
Affiliations
Junhui Wu
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Junchao Jin
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Po Hu
Henan Provincial Key Laboratory of Intelligent Lighting, Huanghuai University, Zhumadian 463000, China
Jinhong Li
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Zeyi Zeng
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Qingdong Li
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Jie Liu
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Mingyong Chen
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Zuoyu Zhang
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Li Wang
College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
Xiao Lin
Information Photonics Research Center, Key Laboratory of Optoelectronic Science and for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Fujian Normal University, Fuzhou 350117, China
Xiaodi Tan
Information Photonics Research Center, Key Laboratory of Optoelectronic Science and for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Fujian Normal University, Fuzhou 350117, China
Phenanthrenequinone-doped poly(methyl methacrylate) (PQ/PMMA) photopolymers are potential holographic storage media owing to their high-density storage capacities, low costs, high stability, and negligible shrinkage in volume holographic permanent memory. However, because of the limitations of the substrate, conventional Plexiglas materials do not exhibit a good performance in terms of photosensitivity and molding. In this study, the crosslinked structure of PMMA was modified by introducing a dendrimer monomer, pentaerythritol tetraacrylate (PETA), which increases the photosensitivity of the material 2 times (from ~0.58 cm/J to ~1.18 cm/J), and the diffraction efficiency is increased 1.6 times (from ~50% to ~80%). In addition, the modified material has a superior ability to mold compared to conventional materials. Moreover, the holographic performance enhancement was evaluated in conjunction with a quantum chemical analysis. The doping of PETA resulted in an overall decrease in the energy required for the reaction system of the material, and the activation energy decreased by ~0.5 KJ/mol in the photoreaction stage.
