Abstract
In holographic memories, photopolymer is a hopeful material as a recording medium. To use a photopolymer for holographic memories as practical recording media, it is necessary to clarify the design condition of recording/reproduction characteristics. The coupled-wave analysis (CWA) and the rigorous coupled-wave analysis (RCWA) are widespread methods to analyze diffraction characteristics of volume holographic gratings. However, holographic grating is more complex than simple grating that is presumed in CWA and RCWA. In this study, we analyzed the index change of photopolymer based on a diffusion model and clarified the diffraction characteristics by using the finite-difference time-domain (FDTD) method.
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