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24 May 2018 Diffraction elements by nanoparticle composites for holographic display
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Dry photopolymer materials are being actively studied for practical applications such as holographic data storage, 3D display, wearable displays with diffractive optical elements and so on. Their versatility, ease of use and self-processing ability give them many advantages over more traditional recording materials such as silver halide and dichromate gelatin for holographic uses. The necessity for development and optimization of such dry photopolymer diffraction elements with higher capability and stability has been recognized and they have recently received significant attention in the areas of holographic and wearable displays. In this work, we carried out nanoparticles composites, which are based on a SiO2 nanoparticle doped acrylate-thiol-ene photopolymer material, in order to fabricate holographic diffraction elements for 3D display uses. Preliminary examination on this material and fabrication techniques shows that a flexible free-standing volume grating with thickness of 200 μm and grating period of 1 μm was fabricated by using proposed nanoparticle composite material in the recording wavelength of 532 nm. The examination on thinner material layers with varied nanoparticles, such as in the range of 10 μm, is undergoing. We believe that such holographic diffraction elements offer a significant potential in display technique.
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Lin Cao, Jinxin Guo, Lu Rong, Xinping Zhang, and Dayong Wang "Diffraction elements by nanoparticle composites for holographic display", Proc. SPIE 10679, Optics, Photonics, and Digital Technologies for Imaging Applications V, 106790T (24 May 2018);

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