Photonic spin-controlled multifunctional shared-aperture antenna array

Maguid, Elhanan; Yulevich, Igor; Veksler, Dekel; Kleiner, Vladimir; Brongersma, Mark L.; Hasman, Erez

doi:10.1126/science.aaf3417

Cited by 456 publications

(429 citation statements)

References 42 publications

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“…These are ultra-thin films, usually a few tens of nanometres thick, composed of dense subwavelength arrays of metallic45 or high-index dielectric236 resonant scatterers (nanoparticles or nanocavities) that are specifically designed for phase and amplitude control of light. Thus various metasurface lenses6789101112, beam shapers13141516, optical switches1718 and even holograms10192021222324252627 were demonstrated. Furthermore, nonlinear beam generation and beam shaping were studied282930313233343536, including nonlinear focusing313235 and holography343637…”

mentioning

confidence: 99%

Composite functional metasurfaces for multispectral achromatic optics

Avayu¹,

Almeida²,

Prior³

et al. 2017

Nat Commun

318

237

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Nanostructured metasurfaces offer unique capabilities for subwavelength control of optical waves. Based on this potential, a large number of metasurfaces have been proposed recently as alternatives to standard optical elements. In most cases, however, these elements suffer from large chromatic aberrations, thus limiting their usefulness for multiwavelength or broadband applications. Here, in order to alleviate the chromatic aberrations of individual diffractive elements, we introduce dense vertical stacking of independent metasurfaces, where each layer is made from a different material, and is optimally designed for a different spectral band. Using this approach, we demonstrate a triply red, green and blue achromatic metalens in the visible range. We further demonstrate functional beam shaping by a self-aligned integrated element for stimulated emission depletion microscopy and a lens that provides anomalous dispersive focusing. These demonstrations lead the way to the realization of ultra-thin superachromatic optical elements showing multiple functionalities—all in a single nanostructured ultra-thin element.

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mentioning

confidence: 99%

Composite functional metasurfaces for multispectral achromatic optics

Avayu¹,

Almeida²,

Prior³

et al. 2017

Nat Commun

318

237

View full text Add to dashboard Cite

show abstract

“…Electrically connected antennas open the perspective of designing antennas that both provide optical enhancement and allow electric driving of active or nonlinear matter that loads the antenna. Similar perspectives could apply to linear and nonlinear metasurfaces to control the amplitude, phase, and spin/orbital angular momentum content of light 31, 32 , if they could be made in connected metallic form. Here we study the optical properties of antennas that are electrically connected and at the same time benefit from the plasmon hybridization effects known from hybridization of discrete particle plasmon resonances.…”

Section: Introductionmentioning

confidence: 96%

Dendritic optical antennas: scattering properties and fluorescence enhancement

Antoncecchi

Zheng

et al. 2017

Sci Rep

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With the development of nanotechnologies, researchers have brought the concept of antenna to the optical regime for manipulation of nano-scaled light matter interactions. Most optical nanoantennas optimize optical function, but are not electrically connected. In order to realize functions that require electrical addressing, optical nanoantennas that are electrically continuous are desirable. In this article, we study the optical response of a type of electrically connected nanoantennas, which we propose to call “dendritic” antennas. While they are connected, they follow similar antenna hybridization trends to unconnected plasmon phased array antennas. The optical resonances supported by this type of nanoantennas are mapped both experimentally and theoretically to unravel their optical response. Photoluminescence measurements indicate a potential Purcell enhancement of more than a factor of 58.

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“…Plasmonic metamaterials, on the other hand, have overcome fundamental limitations in conventional optics by engineering the resonant and dispersion properties of metallodielectric nanostructures 4–6 , bringing unusual optical phenomena and functionalities into reality 7–15 . An example of their potential applications includes a metamaterial-based polarimetric device to control the polarization in a desired manner 16–18 , and such a new capability may offer a powerful platform for novel sensing applications 19, 20 .…”

Section: Introductionmentioning

confidence: 99%

Cross-Polarized Surface-Enhanced Infrared Spectroscopy by Fano-Resonant Asymmetric Metamaterials

Ishikawa

Hara

Tanaka

et al. 2017

Sci Rep

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Plasmonic metamaterials have overcome fundamental limitations in conventional optics by their capability to engineer material resonances and dispersions at will, holding great promise for sensing applications. Recent demonstrations of metamaterial sensors, however, have mainly relied on their resonant nature for strong optical interactions with molecules, but few examples fully exploit their functionality to manipulate the polarization of light. Here, we present cross-polarized surface-enhanced infrared absorption (SEIRA) by the Fano-resonant asymmetric metamaterial allowing for strong background suppression as well as significant field enhancement. The metamaterial is designed to exhibit the controlled Fano resonance with the cross-polarization conversion property at 1730 cm−1, which spectrally overlaps with the C=O vibrational mode. In the cross-polarized SEIRA measurement, the C=O mode of poly(methyl methacrylate) molecules is clearly observed as a distinct dip within a Fano-resonant transmission peak of the metamaterial. The vibrational signal contrast is then improved based on the cross-polarized detection scheme where only the light interacting with the metamaterial-molecular coupled system is detected by totally eliminating the unwanted background light. Our metamaterial approach achieves the zeptomole sensitivity with a large signal-to-noise ratio in the far-field measurement, paving the way toward the realization of ultrasensitive IR inspection technologies.

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Photonic spin-controlled multifunctional shared-aperture antenna array

Cited by 456 publications

References 42 publications

Composite functional metasurfaces for multispectral achromatic optics

Composite functional metasurfaces for multispectral achromatic optics

Dendritic optical antennas: scattering properties and fluorescence enhancement

Cross-Polarized Surface-Enhanced Infrared Spectroscopy by Fano-Resonant Asymmetric Metamaterials

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