Abstract
Behavior of diffraction gratings recorded in thick (1-mm) acrylamide-based photopolymer layers doped with Si-MFI Zeolite nanoparticles (1.9% w/V) was studied. The gratings were recorded at a spatial frequency of 1000 lines/mm at three different values of absorbance (0.10, 0.18 and 0.37). A modified method was developed for the preparation of l-mm thick layers with uniform layer thickness and at lower surface roughness. By measuring the diffraction efficiency growth and studying the diffraction pattern, the influence of nanoparticles (Si-MFI) doped thick volume holographic gratings was analyzed. For all above absorbances, Si-MFI nanocomposite doped 1-mm thick layers showed higher diffraction efficiency (DE) than the undoped thick layers. High-contrast image and DE was observed for the absorbance of 0.18 in 1-mm thick Si-MFI nanocomposite layers.
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