Diffraction elements by nanoparticle composites for holographic display

摘要

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 SiO_2 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 μrn and grating period of 1 μrn 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 urn, is undergoing. We believe that such holographic diffraction elements offer a significant potential in display technique.