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Proceedings Paper

Dynamics analysis of erythrosine B sensitized photopolymer holographic gratings
Author(s): Ke Chen; Jian-Qun Cheng; Yan Wang; Ming-Ju Huang
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Paper Abstract

The dynamic theoretical model of photochemical and hologram formation in holographic photopolymer is established, and the dynamic development process of holographic storage in the photopolymer is discussed with the model. A holographic photopolymer sensitized by erythrosine B is prepared, which is composed of acrylamide as monomer, ployvinylalcohol as binder, triethanolamine as initiator. The influence of the exposure intensity on holographic storage characteristics is analyzed. The experimental data of transmittance and diffraction efficiency of the fabricated photopolymer with different exposure intensities are obtained. By means of fitting the experimental data of transmittance and diffraction efficiency as a function of time with five exposure intensities at a wavelength of 514nm, the variation of photochemistry and photopolymerization diffusion dynamic parameters such as the molar-absorption coefficient ε, quantum yield Φ, photobleaching coefficient kp, polymerization rate k0 and diffusion time constant τD is presented. The research results show that as the exposure intensity increases, so do also ε, kp and k0, but Φ becomes smaller. And τD has no obvious changes except the sample is overexposed. This material has the characteristics of longer diffusion times for the monomer to travel from the unexposed to the exposed zones than that in the case of other polymeric materials.

Paper Details

Date Published: 19 March 2009
PDF: 12 pages
Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 71250C (19 March 2009); doi: 10.1117/12.822147
Show Author Affiliations
Ke Chen, Henan Univ. (China)
Jian-Qun Cheng, Henan Univ. (China)
Yan Wang, Henan Univ. (China)
Ming-Ju Huang, Henan Univ. (China)


Published in SPIE Proceedings Vol. 7125:
Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage
Fuxi Gan, Editor(s)

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