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Multifunctional metaoptics based on bilayer metasurfaces

查看全文 作　　者：You [1]Zhou;Ivan [2]I.Kravchenko;Hao [3]Wang;Hanyu [4]Zheng;Gong [3]Gu;Jason [5]Valentine 高影响力作者 机构地区：[1]Interdisciplinary Materials Science Program,Vanderbilt University,Nashville,TN 37212,USA;[2]Center for Nanophase Materials Sciences,Oak Ridge National Laboratory,Oak Ridge,TN 37831,USA;[3]Min H.Kao Department of Electrical Engineering and Computer Science,University of Tennessee,Knoxville,TN 37996,USA;[4]Department of Electric Engineering and Computer Science,Vanderbilt University,Nashville,TN 37212,USA;[5]Department of Mechanical Engineering,Vanderbilt University,Nashville,TN 37212,USA高影响力机构 出　　处：《Light(Science & Applications)》索引2019年第8卷第1期,共9页高影响力期刊 基　　金：support received from the Office of Naval Research under award N00014-18-1-2563;the National Science Foundation under award ECCS-1351334;support received from the National Science Foundation under award DMR-1410940. 摘　　要：Optical metasurfaces have become versatile platforms for manipulating the phase,amplitude,and polarization of light.A platform for achieving independent control over each of these properties,however,remains elusive due to the limited engineering space available when using a single-layer metasurface.For instance,multiwavelength metasurfaces suffer from performance limitations due to space filling constraints,while control over phase and amplitude can be achieved,but only for a single polarization.Here,we explore bilayer dielectric metasurfaces to expand the design space for metaoptics.The ability to independently control the geometry and function of each layer enables the development of multifunctional metaoptics in which two or more optical properties are independently designed.As a proof of concept,we demonstrate multiwavelength holograms,multiwavelength waveplates,and polarization-insensitive 3D holograms based on phase and amplitude masks.The proposed architecture opens a new avenue for designing complex flat optics with a wide variety of functionalities. 关 键 词：surface. OPTICS independently
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