Far-Infrared Graphene Plasmonic Crystals for Plasmonic Band Engineering

Yeung, Kitty Y. M.; Chee, Jing Yee; Yoon, Hosang; Song, Yi; Kong, Jing; Ham, Donhee

doi:10.1021/nl500158y

Cited by 69 publications

(70 citation statements)

References 37 publications

(62 reference statements)

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“…A similar concept from plasmonic crystals was introduced to excite THz GPPs on a periodic hole array in a graphene sheet by Kitty et al [68]. Zhu et al [58] proposed using a two-dimensional subwavelength silicon grating beneath graphene to excite GPPs [see Fig.…”

Section: Excitation Of Graphene-plasmon Polaritonsmentioning

confidence: 99%

Graphene-plasmon polaritons: From fundamental properties to potential applications

et al. 2016

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With unique possibilities for controlling light in nanoscale devices, graphene plasmonics has opened new perspectives to the nanophotonics community with potential applications in metamaterials, modulators, photodetectors, and sensors. In this paper, we briefly review the recent exciting progress in graphene plasmonics. We begin with a general description of the optical properties of graphene, particularly focusing on the dispersion of graphene-plasmon polaritons. The dispersion relation of graphene-plasmon polaritons of spatially extended graphene is expressed in terms of the local response limit with an intraband contribution. With this theoretical foundation of graphene-plasmon polaritons, we then discuss recent exciting progress, paying specific attention to the following topics: excitation of graphene plasmon polaritons, electron-phonon interactions in graphene on polar substrates, and tunable graphene plasmonics with applications in modulators and sensors. Finally, we address some of the apparent challenges and promising perspectives of graphene plasmonics.

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Section: Excitation Of Graphene-plasmon Polaritonsmentioning

confidence: 99%

Graphene-plasmon polaritons: From fundamental properties to potential applications

et al. 2016

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“…For extended graphene, these volumes can be about α 3 ≈ 10 −6 times smaller (where α denotes the fine-structure constant) than the volume characterized by the free-space light's wavelength (i.e., λ −3 0 ). Typical strategies to couple light to graphene plasmons involve the patterning of pristine graphene into gratings and related nanostructures [26,27,38,40,[48][49][50][51][51][52][53][54][55][56][57][57][58][59], the use of dielectric gratings [65,66], light scattering from a conductive tip [71][72][73][74], and even nonlinear three-wave mixing [69,70].…”

Section: Introductionmentioning

confidence: 99%

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

et al. 2016

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We study electromagnetic scattering and subsequent plasmonic excitations in periodic grids of graphene ribbons. To address this problem, we develop an analytical method to describe the plasmon-assisted absorption of electromagnetic radiation by a periodic structure of graphene ribbons forming a diffraction grating for THz and mid-IR light. The major advantage of this method lies in its ability to accurately describe the excitation of graphene surface plasmons (GSPs) in one-dimensional (1D) graphene gratings without the use of both time-consuming, and computationally demanding full-wave numerical simulations. We thus provide analytical expressions for the reflectance, transmittance, and plasmon-enhanced absorbance spectra, which can be readily evaluated using any personal computer with little to no programming. We also introduce a semianalytical method to benchmark our previous results and further compare the theoretical data with spectra taken from experiments, for which we observe a very good agreement. These theoretical tools may therefore be applied to design new experiments and cutting-edge nanophotonic devices based on graphene plasmonics.

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“…Graphene appears to be a good candidate for designing and engineering tunable devices because its conductivity can be controlled by shifting the Fermi energy levels, which may be potentially tuned from −1 to 1 eV by chemical doping [18] or electrical gating [19]. So far, graphene has been extensively studied for applications in photonics and optoelectronics [20,21], plasmonic metamaterials [22,23], and medical sciences [24].…”

Section: Introductionmentioning

confidence: 99%

Dynamically Tunable Fano Metamaterials through the Coupling of Graphene Grating and Square Closed Ring Resonator

et al. 2015

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We present the numerical studies of a novel hybrid graphene-metal Fano metamaterial, which is composed of a graphene grating (graphene ribbon array) and a square closed ring resonator (SCRR) separated by a dielectric substrate. The destructive interference between the narrow and broad electrical dipolar surface plasmons induced respectively on the surface of the graphene ribbon and the SCRR leads to the classical analog of electromagnetically induced transparency (EIT). By decreasing the thickness of the substrate spacer (enhancing the coupling between the two components), a double EIT system could be achieved. More importantly, the transparency windows in the hybrid structures can be actively controlled by varying the applied gate voltage on the graphene ribbon. Large effective group index and small loss within the transparency windows suggest the promising slow-light applications.

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Far-Infrared Graphene Plasmonic Crystals for Plasmonic Band Engineering

Cited by 69 publications

References 37 publications

Graphene-plasmon polaritons: From fundamental properties to potential applications

Graphene-plasmon polaritons: From fundamental properties to potential applications

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

Dynamically Tunable Fano Metamaterials through the Coupling of Graphene Grating and Square Closed Ring Resonator

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