Journal ArticleDOI
Planar metasurface retroreflector
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TLDR
Cascaded metasurfaces are two-dimensional arrangements of subwavelength scatterers that control the propagation of optical waves and provide a new optical design framework that enables new functionalities.Abstract:
Metasurfaces are two-dimensional arrangements of subwavelength scatterers that control the propagation of optical waves. Here, we show that cascaded metasurfaces, each performing a predefined mathematical transformation, provide a new optical design framework that enables new functionalities not yet demonstrated with single metasurfaces. Specifically, we demonstrate that retroreflection can be achieved with two vertically stacked planar metasurfaces, the first performing a spatial Fourier transform and its inverse, and the second imparting a spatially varying momentum to the Fourier transform of the incident light. Using this concept, we fabricate and test a planar monolithic near-infrared retroreflector composed of two layers of silicon nanoposts, which reflects light along its incident direction with a normal incidence efficiency of 78% and a large half-power field of view of 60°. The metasurface retroreflector demonstrates the potential of cascaded metasurfaces for implementing novel high-performance components, and enables low-power and low-weight passive optical transmitters.read more
Citations
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Journal ArticleDOI
A broadband achromatic metalens in the visible
Shuming Wang,Pin Chieh Wu,Vin Cent Su,Yi Chieh Lai,Mu Ku Chen,Hsin Yu Kuo,Bo Han Chen,Yu Han Chen,Tzu-Ting Huang,Jung Hsi Wang,Ray-Ming Lin,Chieh-Hsiung Kuan,Tao Li,Zhenlin Wang,Shining Zhu,Din Ping Tsai,Din Ping Tsai,Din Ping Tsai +17 more
TL;DR: Integrating the Pancharatnam–Berry phase with integrated resonant nanoantennas in a metalens design produces an achromatic device capable of full-colour imaging in the visible range in transmission mode.
Journal ArticleDOI
MEMS-tunable dielectric metasurface lens.
Ehsan Arbabi,Amir Arbabi,Amir Arbabi,Seyedeh Mahsa Kamali,Yu Horie,MohammadSadegh Faraji-Dana,Andrei Faraon +6 more
TL;DR: In this paper, the authors demonstrate tunable metasurface doublets, based on microelectromechanical systems (MEMS), with more than 60 diopters (about 4%) change in the optical power upon a 1-μm movement of one metasuran, and a scanning frequency that can potentially reach a few kHz.
Journal ArticleDOI
A review of dielectric optical metasurfaces for wavefront control
TL;DR: In this article, a review of the recent developments in dielectric structures for shaping optical wavefronts is presented with an outlook on future potentials and challenges that need to be overcome.
Journal ArticleDOI
Electromagnetic metasurfaces: physics and applications
TL;DR: In this article, the authors present an overview on the development of metasurfaces, including both homogeneous and inhomogeneous ones, focusing particularly on their working principles, the fascinating wave-manipulation effects achieved both statically and dynamically, and the representative applications so far realized.
Journal ArticleDOI
Metasurface eyepiece for augmented reality
Gun-Yeal Lee,Jong-Young Hong,Soon Hyoung Hwang,Seokil Moon,Hyeokjung Kang,Sohee Jeon,Hwi Kim,Jun-Ho Jeong,Byoungho Lee +8 more
TL;DR: A metasurface application to realize a compact near-eye display system for augmented reality with a wide field of view, full-color imaging, high resolution and a sufficiently large eyebox is demonstrated.
References
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Journal ArticleDOI
Flat Optics With Designer Metasurfaces
Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
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Metalenses at visible wavelengths: Diffraction-limited focusing and subwavelength resolution imaging.
Mohammadreza Khorasaninejad,Wei Ting Chen,Robert C. Devlin,Jaewon Oh,Alexander Y. Zhu,Federico Capasso +5 more
TL;DR: The results firmly establish that metalenses can have widespread applications in laser-based microscopy, imaging, and spectroscopy, with image qualities comparable to a state-of-the-art commercial objective.
Journal ArticleDOI
Dielectric metasurfaces for complete control of phase and polarization with subwavelength spatial resolution and high transmission
TL;DR: A metasurface platform based on high-contrast dielectric elliptical nanoposts that provides complete control of polarization and phase with subwavelength spatial resolution and an experimentally measured efficiency ranging from 72% to 97%, depending on the exact design.
Journal ArticleDOI
Dielectric gradient metasurface optical elements.
TL;DR: The experimental realization and operation of dielectric gradient metasurface optical elements capable of also achieving high efficiencies in transmission mode in the visible spectrum are described.
Journal ArticleDOI
All-dielectric metamaterials
TL;DR: This Review presents a broad outline of the whole range of electromagnetic effects observed using all-dielectric metamaterials: high-refractive-index nanoresonators, metasurfaces, zero-index met amaterials and anisotropic metammaterials, and discusses current challenges and future goals for the field at the intersection with quantum, thermal and silicon photonics.