Optical Instruments, Volume. 46, Issue 1, 23(2024)
Study on holographic storage properties of fullerene-doped photopolymer
In this paper, the effect of fullerene on the holographic properties of photopolymers in the hexafunctional aliphatic polyurethane acrylate/epoxy resin (RJ423/EPIKOTE 828) system was studied, and the influence of fullerene (C60) and exposure light intensity on photopolymers diffraction efficiency were analyzed. The absorption spectrum combined with X-ray diffraction pattern analysis illustrates that the doped fullerene does not chemically reacts with other components in the polymer, and does not impacts on its structure and crystallization properties. Experimental results demonstrate that fullerene doping can effectively increase the rate of monomer polymerization and participate in the diffusion between active monomer molecules. The diffraction efficiency of the photopolymer increases to 86% with the thickness of 200 μm, which the photosensitivity reaches 1.32 cm2/J and the shrinkage rate is reduced by 5 times under the light intensity of 20 mW/cm2 for time of 40~50 s. C60 may enhance the stability of holographic storage, owing to the promotion of polymerization and the suppression of the shrinkage. The comparison of holographic image storage experiments illuminates that the photopolymer doped with fullerene has excellent holographic storage performance, which also shows that fullerene doped photopolymers have great application prospects in the field of holographic storage.
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Shaoxin LI, Yourong LIU, Zengrong ZHENG, Ning ZHU, Chenchen XING, Jihong ZHENG. Study on holographic storage properties of fullerene-doped photopolymer[J]. Optical Instruments, 2024, 46(1): 23
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Received: Mar. 17, 2023
Accepted: --
Published Online: Mar. 6, 2024
The Author Email: ZHENG Jihong (Jihongzheng@sina.com)