Cationic photo-initiator titanocene dispersed PMMA photopolymers for holographic memories

Liu, Peng; Wang, Linlin; Zhao, Yu; Li, Zeren; Sun, Xingming

doi:10.1364/osac.1.000783

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…Later, Peng Liu used an optimized three-step thermal polymerization method to prepare a novel cationic photoinitiator: dimethene dispersed polymethyl methacrylate (Ti/PMMA) photopolymer [ 126 , 127 ]. The experiments studied detail the effect of changes in material thickness on holographic properties.…”

Section: Origins Of Pq/pmma and Performance Improvement Measuresmentioning

confidence: 99%

Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Zeng

et al. 2022

Molecules

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Phenanthraquinone-doped polymethyl methacrylate (PQ/PMMA) photopolymers are considered to be the most promising holographic storage media due to their unique properties, such as high stability, a simple preparation process, low price, and volumetric shrinkage. This paper reviews the development process of PQ/PMMA photopolymers from inception to the present, summarizes the process, and looks at the development potential of PQ/PMMA in practical applications.

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Section: Origins Of Pq/pmma and Performance Improvement Measuresmentioning

confidence: 99%

Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Zeng

et al. 2022

Molecules

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“…We replaced PQ (phenanthrenequinone) molecules [ 13 ] with TI molecules [ 14 , 15 ] to create a new-generation photo-initiator. This kind of photopolymer exhibits better holographic properties than that of PQ/PMMA [ 16 ]. Meanwhile, TI/PMMA polymers can record holographic intensity and polarization modulated gratings through long-time (second level) and short-time (millisecond level) exposure [ 17 , 18 , 19 ], exemplifying the competitiveness of holographic storage applications.…”

Section: Introductionmentioning

confidence: 99%

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

Liu

Sun

2021

Polymers

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The dark diffusion enhancement process (DDEP) caused by photopolymerization during the pre-exposure of TI/PMMA (titanocene dispersed methyl methacrylate matrix) polymers was theoretically analyzed and experimentally investigated, revealing the holographic grating enhancement of TI/PMMA polymers in the post-exposure process without additional operations. The diffusion of photo-initiators and photoproducts dominated the grating enhancement process after exposure. We adopted two pre-exposure methods, long-time (second level) and short-time (millisecond level) laser exposure, at 532 nm, to investigate the DDEP during the post-exposure process. A five-fold enhancement in grating strength was achieved in consecutive long-time pre-exposures, while a two-fold grating development was examined after short-time exposure. Additionally, the exposure durations and repetition rates influenced the grating increment of the DDEP. This study provided a basis for the feasibility of holographic application in TI/PMMA photopolymers via the dark diffusion effect.

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Polarization holographic characteristics of TI/PMMA polymers by linearly polarized exposure

2020

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Cationic photo-initiator titanocene dispersed PMMA photopolymers for holographic memories

Cited by 8 publications

References 32 publications

Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

Polarization holographic characteristics of TI/PMMA polymers by linearly polarized exposure

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