Dielectric metasurfaces for distance measurements and three-dimensional imaging

Chunqi Jin; Mina Afsharnia; René Berlich; Stefan Fasold; Chengjun Zou; Dennis Arslan; Isabelle Staude; Thomas Pertsch; Frank Setzpfandt

doi:10.1117/1.AP.1.3.036001

18 June 2019 Dielectric metasurfaces for distance measurements and three-dimensional imaging

Chunqi Jin, Mina Afsharnia, René Berlich, Stefan Fasold, Chengjun Zou, Dennis Arslan, Isabelle Staude, Thomas Pertsch, Frank Setzpfandt

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Advanced Photonics, Vol. 1, Issue 3, 036001 (June 2019). https://doi.org/10.1117/1.AP.1.3.036001

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.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Chunqi Jin, Mina Afsharnia, René Berlich, Stefan Fasold, Chengjun Zou, Dennis Arslan, Isabelle Staude, Thomas Pertsch, and Frank Setzpfandt "Dielectric metasurfaces for distance measurements and three-dimensional imaging," Advanced Photonics 1(3), 036001 (18 June 2019). https://doi.org/10.1117/1.AP.1.3.036001

Received: 14 April 2019; Accepted: 1 June 2019; Published: 18 June 2019

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