Photochemical kinetics for holographic grating formation in phenanthrenequinone doped poly (methyl methacrylate) photopolymer |
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Authors: | Wang Jian Sun Xiu-Dong Luo Su-Hu Jiang Yong-Yuan and Meng Qing-Xin |
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Institution: | Department of Physics, Harbin Institute of Technology, Harbin 150001, China |
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Abstract: | The photochemical kinetics of phenanthrenequinone (PQ) doped poly
(methyl methacrylate) photopolymer in holographic recording was
studied theoretically and experimentally. The diffusion of PQ
molecules during holographic recording was negligible because of its
small diffusion coefficient at room temperature. A photochemical
reaction kinetics model of PQ/PMMA was established. The analytical
expressions for the temporal variations of transmittance and
diffraction efficiency were derived. By fitting the experimental
curves, some parameters related with the polymer components were
obtained by the proposed model, which can be used to analyze the
photochemical process and will be helpful to the optimization of
material preparation. |
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Keywords: | phenanthrenequinone doped
poly(methyl methacrylate) photochemical reaction |
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