1 September 2005 Spatial resolution enhancement of a red-sensitive acrylamide based photopolymer and its holographic applications
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Abstract
A red-sensitive acrylamide-based photopolymer based on multiple polymerizable monomers is developed in this paper for holographic applications. In order to improve the spatial resolution of this photopolymer system, a new strategy of employing low molecular-weight polyvinyl alcohol as binder is proposed. The comparative experiments of different photosensitive system with various molecular weights (72000,15000, 9000) are conducted to study their effects on the diffraction efficiency and spatial resolution. The experimental results show that the photosensitive system with low molecular weight of 9000 has much higher resolution and diffraction efficiency, and bright volume transmission grating with spatial frequency of 3000 lines/mm and diffraction efficiency higher than 85% can be recorded successfully on the optimum photopolymer material at the exposure level of 40 mJ/cm2. Some preliminary applications of spatial and angular multiplexing holographic storage for storing multiple binary and grey-tone optical images, are successfully demonstrated.
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Li Chen, Jianhua Zhu, Jianfeng Li, Xiaowei Guo, Chuanqin Xia, "Spatial resolution enhancement of a red-sensitive acrylamide based photopolymer and its holographic applications", Proc. SPIE 5939, Organic Holographic Materials and Applications III, 59390L (1 September 2005); doi: 10.1117/12.615910; https://doi.org/10.1117/12.615910
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