Dielectric metasurfaces for distance measurements and three-dimensional imaging

作     者：Chunqi Jin Mina Afsharnia RenéBerlich Stefan Fasold Chengjun Zou Dennis Arslan Isabelle Staude Thomas Pertsch Frank Setzpfandt 

作者机构：Friedrich Schiller University JenaInstitute of Applied PhysicsAbbe Center of PhotonicsJenaGermany Chinese Academy of SciencesChangchun Institute of OpticsFine Mechanics and PhysicsChangchunChina University of the Chinese Academy of SciencesBeijingChina Fraunhofer Institute for Applied Optics and Precision EngineeringJenaGermany 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2019年第1卷第3期

页      面：20-28页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：We thank Waltraud Gräf Daniel Voigt Michael Banasch and Thomas Käsebier for help with the fabrication.Financial support by the German Research Foundation within the Emmy-Noether program and the SPP“Tailored Disorder”(STA 1426/1-1 STA 1426/2-1 PE 1524/10-2)is gratefully acknowledged.Part of this research was funded by the German Federal Ministry of Education and Research(BMBF)under the project identifiers 13N14147 and 03ZZ0434. 

主　　题：optics nanophotonics metasurfaces Mie-resonances three-dimensional imaging point-spread function engineering 

摘      要：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.