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Holographic Grating Formation in Cationic Photopolymers with Dark Reaction |
| WEI Hao-Yun1;CAO Liang-Cai1;GU Claire2;XU Zhen-Feng1;HE Ming-Zhao1;HE Qing-Sheng1;HE Shu-Rong1;JIN Guo-Fan1 |
| 1State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084
2Department of Electrical Engineering, University of California, Santa Cruz, CA 95064, USA |
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| Cite this article: |
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WEI Hao-Yun, CAO Liang-Cai, GU Claire et al 2006 Chin. Phys. Lett. 23 2960-2963 |
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Abstract We propose a new formula to describe the dynamics of holographic grating formation under low intensity pulse exposures in cationic photopolymers, in which the dark reaction contributes dominantly to the grating strength. The formula is based on the living polymerization mechanism and the diffusion-free approximation. The analytical solution indicates that the grating formation time depends on the termination rate constant, while the final grating strength depends linearly on the total exposure energy. These theoretical predictions are verified experimentally using the Aprilis HMC-400μm photopolymer. The results can provide guidelines for the control and optimization of the holographic recording conditions in practical applications.
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42.40.Eq
42.70.Jk
42.70.Ln
42.40.Lx
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Published: 01 November 2006
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| PACS: |
42.40.Eq
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(Holographic optical elements; holographic gratings)
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42.70.Jk
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(Polymers and organics)
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42.70.Ln
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(Holographic recording materials; optical storage media)
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42.40.Lx
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(Diffraction efficiency, resolution, and other hologram characteristics)
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