• Advanced Photonics
  • Vol. 1, Issue 3, 036001 (2019)
Chunqi Jin1、2、3, Mina Afsharnia1, René Berlich4, Stefan Fasold1, Chengjun Zou1, Dennis Arslan1, Isabelle Staude1, Thomas Pertsch1、4, and Frank Setzpfandt1、*
Author Affiliations
  • 1Friedrich Schiller University Jena, Institute of Applied Physics, Abbe Center of Photonics, Jena, Germany
  • 2Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, China
  • 3University of the Chinese Academy of Sciences, Beijing, China
  • 4Fraunhofer Institute for Applied Optics and Precision Engineering, Jena, Germany
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    Abstract

    Ultrathin metasurfaces have shown the capability to influence all aspects of light propagation. This has made them promising options for replacing conventional bulky imaging optics while adding advantageous optical properties or functionalities. We demonstrate that such metasurfaces can also be applied for single-lens three-dimensional (3-D) imaging based on a specifically engineered point-spread function (PSF). Using Huygens’ metasurfaces with high transmission, we design and realize a phase mask that implements a rotating PSF for 3-D imaging. We experimentally characterize the properties of the realized double-helix PSF, finding that it can uniquely encode object distances within a wide range. Furthermore, we experimentally demonstrate wide-field depth retrieval within a 3-D scene, showing the suitability of metasurfaces to realize optics for 3-D imaging, using just a single camera and lens system.

    1 Introduction

    Metasurfaces, dense arrangements of subwavelengths scatterers in a plane, have been demonstrated to enable control of transmitted light in both amplitude and phase.1 Specifically, metasurfaces manufactured solely from dielectric materials have a large application potential due to their many design degrees of freedom combined with negligible material losses,24 especially compared to their plasmonic counterparts.5 Consequently, a number of different optical elements have been demonstrated, including holograms,610 vortex-phase plates,1113 lenses,7,1423 and tunable functional elements.2426

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    Chunqi Jin, Mina Afsharnia, René Berlich, Stefan Fasold, Chengjun Zou, Dennis Arslan, Isabelle Staude, Thomas Pertsch, Frank Setzpfandt. Dielectric metasurfaces for distance measurements and three-dimensional imaging[J]. Advanced Photonics, 2019, 1(3): 036001
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    Category: Research Articles
    Received: Apr. 14, 2019
    Accepted: Jun. 1, 2019
    Posted: Jun. 4, 2019
    Published Online: Jun. 19, 2019
    The Author Email: Setzpfandt Frank (f.setzpfandt@uni-jena.de)