Broadband reflective lens in visible band based on aluminum plasmonic metasurface

Lu, Deng-Yun; Cao, Xun; Wang, K. J.; He, Meng-Dong; Wang, D.; Li, J.; Zhang, X. M.; Liu, L.; Luo, Jianhua; Li, Zongchen; Liu, J. Q.; Xu, Liang; Hu, Weida; Chen, Xiao

doi:10.1364/oe.26.034956

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…The reflective metalenses is an important part of the metasurface technology and play critical roles in applications such as imaging and metaholograms [6,7]. However, Previous reports of the reflective metalens have mainly used metallic layers as the mirror [8][9][10][11][12], which could cause issues such as low reflectivity, high loss due to plasmonics coupling, and difficulty in fabrication.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tapered Nanopillars for Reflective Metalens: The Role of Higher-Order Modes

et al. 2020

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Despite the widespread interest in the metalens technology, few works show the errors during fabrication and analyze how they influence the focusing performance. In this work, we proposed a reflective metalens design and carry out a fundamental study on how a mild tapering angle (<6°) of the nanopillars would influence the performance of a reflective metalens. By analyzing the interaction of Mie resonance in the lateral direction and Fabry-Pérot resonance in the longitudinal direction using numerical simulations, we reveal the detrimental role the tapering angle plays due to the low transmission near the resonance. We observe the weakening of the electric quadrupole and magnetic dipole response, and the increase of the electric dipole response for tapered nanopillars. Moreover, the Fabry-Pérot resonance is disturbed due to the broken symmetry. These factors contribute to lower Q factor resonance and hence the low transmission. The results presented in this work can guide the analysis of fabrication errors and provide insights on how to compensate them.

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Section: Introductionmentioning

confidence: 99%

Analysis of Tapered Nanopillars for Reflective Metalens: The Role of Higher-Order Modes

et al. 2020

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“…With the continuous development of micro-nano optics, traditional optical lenses are difficult to meet the requirements of large-scale integration and device miniaturization and functional diversification. Metasurface lenses [90,91,92,93,94] are made of two-dimensional (2D) planar structures that artificially arrange optical antennas with special electromagnetic characteristics in a certain way, which can achieve flexible regulation of amplitude, phase, polarization and other parameters of the incident light. Important applications, such as holographic optics and achromatic lenses, have been triggered.…”

Section: Introductionmentioning

confidence: 99%

Metamaterial Lensing Devices

Zhou

et al. 2019

Molecules

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In recent years, the development of metamaterials and metasurfaces has drawn great attention, enabling many important practical applications. Focusing and lensing components are of extreme importance because of their significant potential practical applications in biological imaging, display, and nanolithography fabrication. Metafocusing devices using ultrathin structures (also known as metasurfaces) with superlensing performance are key building blocks for developing integrated optical components with ultrasmall dimensions. In this article, we review the metamaterial superlensing devices working in transmission mode from the perfect lens to two-dimensional metasurfaces and present their working principles. Then we summarize important practical applications of metasurfaces, such as plasmonic lithography, holography, and imaging. Different typical designs and their focusing performance are also discussed in detail.

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“…By adjusting the geometrical parameters of plasmonic antennas of metasurface, we can control the transmitted or reflected wavefront flexibly [1]- [3]. Since Capasso et al first investigated beam steering in 2011 [4], many kinds of models have been reported on planar metasurfaces to achieve the functions of focusing lens [5]- [7] and anomalous reflection and refraction [8]. However, the resonator is usually selected as metal or dielectric [9]- [11], lacking active manipulation once fabricated.…”

Section: Switchable Polarization Selective Terahertz Wavefront Manipulation In a Graphene Metasurface 1 Introductionmentioning

confidence: 99%

Switchable Polarization Selective Terahertz Wavefront Manipulation in a Graphene Metasurface

et al. 2019

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We propose a graphene-based metasurface to investigate the function of switchable polarization selective wave manipulation in THz regime by using the finite-difference time-domain method. The proposed metasurface consists of two layers of graphene arrays, polymer dielectric spacer and a gold mirror film, which can be switched between two states by simply biasing the two graphene layers ON and OFF with the designed voltage and zero voltage without reconfiguring the Fermi energy distribution. One state is for x polarized wave manipulation and the other is for y polarization incidence. Then, the functions of switchable polarization selective anomalous reflection and focusing effect for 6 THz wave are realized by configuring the structure with specific values of Fermi energy. Moreover, we also designed the structure to focus at other spatial positions and another working frequency of 5.5 THz by reconfiguring the Fermi energy distributions.

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Broadband reflective lens in visible band based on aluminum plasmonic metasurface

Cited by 10 publications

References 34 publications

Analysis of Tapered Nanopillars for Reflective Metalens: The Role of Higher-Order Modes

Analysis of Tapered Nanopillars for Reflective Metalens: The Role of Higher-Order Modes

Metamaterial Lensing Devices

Switchable Polarization Selective Terahertz Wavefront Manipulation in a Graphene Metasurface

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