Coherent perfect absorption in an all-dielectric metasurface

Zhu, Weiren; Xiao, Fajun; Kang, Ming; Premaratne, Malin

doi:10.1063/1.4944635

Cited by 121 publications

(64 citation statements)

References 33 publications

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“…The scattering matrixŜ is derived from Maxwell's equations and depends on the geometry of the scatterer, material properties and operating wavelength. It can be calculated in several ways, including the transfer matrix method [1], Green's function methods [30,31], finite-element methods with scattering boundary conditions [32] and coupled-mode theory [2,[33][34][35][36][37]. Coherent perfect absorption occurs when every output wave component vanishes, i.e.,…”

Section: Arxiv:170603694v2 [Physicsoptics] 14 Aug 2017 Theoretical mentioning

confidence: 99%

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Coherent perfect absorbers: linear control of light with light

et al. 2017

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Absorption of electromagnetic energy by a material is a phenomenon that underlies many applied problems, including molecular sensing, photocurrent generation and photodetection. Commonly, the incident energy is delivered to the system through a single channel, for example by a plane wave incident on one side of an absorber. However, absorption can be made much more efficient by exploiting wave interference. A coherent perfect absorber is a system in which complete absorption of electromagnetic radiation is achieved by controlling the interference of multiple incident waves. Here, we review recent advances in the design and applications of such devices. We present the theoretical principles underlying the phenomenon of coherent perfect absorption and give an overview of the photonic structures in which it can be realized, including planar and guidedmode structures, graphene-based systems, parity-and time-symmetric structures, 3D structures and quantum-mechanical systems. We then discuss possible applications of coherent perfect absorption in nanophotonics and, finally, we survey the perspectives for the future of this field.

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Section: Arxiv:170603694v2 [Physicsoptics] 14 Aug 2017 Theoretical mentioning

confidence: 99%

“…There is currently a considerable interest in using planar metamaterials -metasurfaces -to realize CPAs [21,22,[35][36][37][64][65][66]. The meta-atoms (unit cells of the metasurface) can be designed to tailor the electromagnetic properties at any desired frequency [67].…”

Section: Metasurfacesmentioning

confidence: 99%

Coherent perfect absorbers: linear control of light with light

et al. 2017

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“…Perfect absorption of electromagnetic wave energy is a fundamental physical issue with wide applications in sensing and molecular detection, radar detection, photovoltaics, nanophotonics, etc. Recently, the concept of coherent perfect absorption (CPA), as time‐reversed lasing, has been proposed and attracted a lot of research interest . In the standard scheme of CPA, perfect absorption of electromagnetic energy is achieved via the interference of two counter‐propagating incident plane waves in a thin film absorber.…”

Section: Introductionmentioning

confidence: 99%

Coherent Perfect Absorption via Photonic Doping of Zero‐Index Media

Luo

Liu

Hang

et al. 2018

Laser & Photonics Reviews

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Coherent perfect absorption, as time‐reversed lasing, is achieved via appropriate interference of waves in absorbers and provides attractive opportunities for flexible control of light scattering and absorption. Here, the authors theoretically and experimentally demonstrate the realization of coherent perfect absorption by using photonic doping of zero‐index media with absorptive defects. Interestingly, the coherent perfect absorption is independent of the size and shape of this “doped” zero‐index medium absorber, as well as the position of the doping defects. This exceptional absorption property can be well explained via the photonic doping theory for zero‐index media. Moreover, the authors demonstrate that the doping scheme also enables novel ways to control absorption, such as multiple channels and multiple doping defects, etc. This work proposes a unique doping approach for advanced coherent perfect absorption with versatile control functionalities.

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“…Coherent light-matter interaction in ultrathin metamaterials has been demonstrated to dynamically modulate intensity, polarization and propagation direction of light22232425262728293031323334353637. Coherent control of metamaterials could be accomplished in various schemes, for instance, in the polarization standing wave33, from linear to circular polarization illumination3435, from conventional metamaterials to gradient metasurfaces30 and from plasmonic to all-dielectric metasurfaces36.…”

mentioning

confidence: 99%

“…Coherent control of metamaterials could be accomplished in various schemes, for instance, in the polarization standing wave33, from linear to circular polarization illumination3435, from conventional metamaterials to gradient metasurfaces30 and from plasmonic to all-dielectric metasurfaces36. The gradient metasurface with a 2π transverse phase variation usually exhibits an anomalous refraction phenomenon.…”

mentioning

confidence: 99%

Coherent control of double deflected anomalous modes in ultrathin trapezoid-shaped slit metasurface

Zhu

Liu

Wang

et al. 2016

Sci Rep

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Coherent light-matter interaction in ultrathin metamaterials has been demonstrated to dynamically modulate intensity, polarization and propagation direction of light. The gradient metasurface with a transverse phase variation usually exhibits an anomalous refracted beam of light dictated by so-called generalized Snell’s law. However, less attention has been paid to coherent control of the metasurface with multiple anomalous refracted beams. Here we propose an ultrathin gradient metasurface with single trapezoid-shaped slot antenna as its building block that allows one normal and two deflected transmitted beams. It is numerically demonstrated that such metasurface with multiple scattering modes can be coherently controlled to modulate output intensities by changing the relative phase difference between two counterpropagating coherent beams. Each mode can be coherently switched on/off and two deflected anomalous beams can be synchronously dictated by the phase difference. The coherent control effect in the trapezoid-shaped slit metasurface will offer a promising opportunity for multichannel signals modulation, multichannel sensing and wave front shaping.

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Coherent perfect absorption in an all-dielectric metasurface

Cited by 121 publications

References 33 publications

Coherent perfect absorbers: linear control of light with light

Coherent perfect absorbers: linear control of light with light

Coherent Perfect Absorption via Photonic Doping of Zero‐Index Media

Coherent control of double deflected anomalous modes in ultrathin trapezoid-shaped slit metasurface

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