A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage

A series of photopolymers based on ethylene glycol phenyl ethyl arylate (EGPEA) monomers and poly(methyl methacrylate) (PMMA) matrix with varying initiator concentrations and sample thicknesses have been synthesized and their optical performance characterized in this study. The advantages of lowerin...

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Main Authors: Fang-Yong Lee, Xin-Jin Wang, Wei-Hung Su, Tzu-Chien Hsu
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Crystals
Subjects:
Online Access:https://www.mdpi.com/2073-4352/10/10/935
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author Fang-Yong Lee
Xin-Jin Wang
Wei-Hung Su
Tzu-Chien Hsu
author_facet Fang-Yong Lee
Xin-Jin Wang
Wei-Hung Su
Tzu-Chien Hsu
author_sort Fang-Yong Lee
collection DOAJ
description A series of photopolymers based on ethylene glycol phenyl ethyl arylate (EGPEA) monomers and poly(methyl methacrylate) (PMMA) matrix with varying initiator concentrations and sample thicknesses have been synthesized and their optical performance characterized in this study. The advantages of lowering the initiator concentration, including a rather short initiation time within a few seconds; a sharp rising optical response; and a stable saturated diffraction efficiency are demonstrated. The variation in the diffraction efficiency and response time with the exposure energy under various sample thickness and initiator concentrations is examined; a diffraction efficiency as high as 80% and a relatively short response time of 12–39 s are attainable. The dependence of the normalized optical parameter “sensitivity” on the exposure time is depicted, and the peak value of S ranges vastly from about 0.2 to 1.2 × 10<sup>4</sup> cm/J within a period of 15 s or so, with a maximum value of nearly 1.2 × 10<sup>4</sup>. Favorable evidence of low initiator concentration can further be found when the dependence of the saturated diffraction efficiency with the exposure energy is examined. The data from this study using a low initiator concentration cover a range of exposure energy from 100 to 800 mJ/cm<sup>2</sup> and a saturated diffraction efficiency from about 15% to 80%. The successful image reconstruction of 6-membered-ring metal nuts on a hologram based on this EGPEA/PMMA photopolymer system using a reflective holographic recording setup is demonstrated to verify its applicability to holographic storage.
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spelling doaj.art-f4d3cde9b92243d988761ed972f985362023-11-20T17:05:18ZengMDPI AGCrystals2073-43522020-10-01101093510.3390/cryst10100935A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic StorageFang-Yong Lee0Xin-Jin Wang1Wei-Hung Su2Tzu-Chien Hsu3Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 804, TaiwanDepartment of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 804, TaiwanDepartment of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 804, TaiwanDepartment of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 804, TaiwanA series of photopolymers based on ethylene glycol phenyl ethyl arylate (EGPEA) monomers and poly(methyl methacrylate) (PMMA) matrix with varying initiator concentrations and sample thicknesses have been synthesized and their optical performance characterized in this study. The advantages of lowering the initiator concentration, including a rather short initiation time within a few seconds; a sharp rising optical response; and a stable saturated diffraction efficiency are demonstrated. The variation in the diffraction efficiency and response time with the exposure energy under various sample thickness and initiator concentrations is examined; a diffraction efficiency as high as 80% and a relatively short response time of 12–39 s are attainable. The dependence of the normalized optical parameter “sensitivity” on the exposure time is depicted, and the peak value of S ranges vastly from about 0.2 to 1.2 × 10<sup>4</sup> cm/J within a period of 15 s or so, with a maximum value of nearly 1.2 × 10<sup>4</sup>. Favorable evidence of low initiator concentration can further be found when the dependence of the saturated diffraction efficiency with the exposure energy is examined. The data from this study using a low initiator concentration cover a range of exposure energy from 100 to 800 mJ/cm<sup>2</sup> and a saturated diffraction efficiency from about 15% to 80%. The successful image reconstruction of 6-membered-ring metal nuts on a hologram based on this EGPEA/PMMA photopolymer system using a reflective holographic recording setup is demonstrated to verify its applicability to holographic storage.https://www.mdpi.com/2073-4352/10/10/935holographic storagephoto-initiatordiffraction efficiencyoptical sensitivity
spellingShingle Fang-Yong Lee
Xin-Jin Wang
Wei-Hung Su
Tzu-Chien Hsu
A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
Crystals
holographic storage
photo-initiator
diffraction efficiency
optical sensitivity
title A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
title_full A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
title_fullStr A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
title_full_unstemmed A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
title_short A Facile Fabrication Route of Poly(Ethylene Glycol Phenyl Ether Acrylate) Photopolymers with Efficient Optical Response for Holographic Storage
title_sort facile fabrication route of poly ethylene glycol phenyl ether acrylate photopolymers with efficient optical response for holographic storage
topic holographic storage
photo-initiator
diffraction efficiency
optical sensitivity
url https://www.mdpi.com/2073-4352/10/10/935
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