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All-Dielectric Meta-Holograms with Holographic Images Transforming Longitudinally

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    All-Dielectric Meta-Holograms with Holographic Images Transforming Longitudinally
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    † Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin 300072, China
    ‡ Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
    § School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, United States
    *E-mail: [email protected]
    *E-mail: [email protected]
    *E-mail: [email protected]
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    ACS Photonics

    Cite this: ACS Photonics 2018, 5, 2, 599–606
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    https://doi.org/10.1021/acsphotonics.7b01173
    Published November 22, 2017
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    Abstract

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    Metasurfaces 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.

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    This article is cited by 59 publications.

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    Cite this: ACS Photonics 2018, 5, 2, 599–606
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsphotonics.7b01173
    Published November 22, 2017
    Copyright © 2017 American Chemical Society
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