All-dielectric meta-holograms with holographic images transforming longitudinally
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractMetasurfaces are unique subwavelength geometries capable of engineering electromagnetic waves at will, delivering new opportunities for holography. Most previous meta-holograms, so-called phase-only meta-holograms, modulate only the amplitude distribution of a virtual object, and require optimizing techniques to improve the image quality. However, the phase distribution of the reconstructed image is usually overlooked in previous studies, leading to inevitable information loss. Here, we demonstrate all-dielectric meta-holograms that allow tailoring of both the phase and amplitude distributions of virtual objects. Several longitudinal manipulations of the holographic images are theoretically and experimentally demonstrated, including shifting, stretching, and rotating, enabling a large depth of focus. Furthermore, a new meta-hologram with a three-dimensional holographic design method is demonstrated with an even enhanced depth of focus. The proposed meta-holograms offer more freedom in holographic design and open new avenues for designing complex three-dimensional holography.
CitationWang Q, Xu Q, Zhang X, Tian C, Xu Y, et al. (2017) All-dielectric meta-holograms with holographic images transforming longitudinally. ACS Photonics. Available: http://dx.doi.org/10.1021/acsphotonics.7b01173.
SponsorsThis work was supported by the National Natural Science Foundation of China (Grant Nos. 61422509, 61735012, 61427814, 61420106006, and 61605143), the National Key Basic Research Special Foundation of China (Grant No. 2014CB339800), the Program for Changjiang Scholars and Innovative Research Team in Universities (Grant No. IRT13033), and the U. S. National Science Foundation (Grant No. ECCS-1232081).
PublisherAmerican Chemical Society (ACS)