Quasi-static plasmon resonances in a graphene ribbon in the infrared range

Anyutin, A. P.; Korshunov, I. P.; Shatrov, A. D.

doi:10.1134/s1064226916060024

Cited by 13 publications

(7 citation statements)

References 11 publications

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“…Single flat strip scattering was studied in [8][9][10] and its wave-guiding properties in [15]. Plasmon-assisted resonances in the scattering and absorption by infinite and finite gratings of coplanar graphene strips under normal and inclined incidence were analyzed in [15][16][17][18][19].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The plasmon modes (i.e. the natural oscillations) of a strip of graphene are commonly viewed as the modes of a Fabry-Perot resonator working on the plasmon surface wave [8][9][10], which bounces between the strip edges. This is an empiric model, which is however well supported by the full-wave computations and experiments.…”

Section: Graphene Conductivity and Plasmon Resonancesmentioning

confidence: 99%

“…Our study has shown that the best fit of the first-order plasmon-mode resonance is provided by / 4    . Note that the expression (21) is more accurate than equation (25) of [10], which can be obtained by setting Z = 0.…”

Section: Graphene Conductivity and Plasmon Resonancesmentioning

confidence: 99%

“…Photonic jets on various dielectric scatterers were reported in [4][5][6][7]. On the other hand, a strip made of graphene is able to support plasmon modes in the infrared and THz ranges of frequencies [8][9][10]. If such a strip is placed into the photonic-jet area, one can expect that two effects can be combined, thus increasing the amplitude of the field in the vicinity of the rod without increasing its radius.…”

Section: Introductionmentioning

confidence: 99%

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Combined plasmon-resonance and photonic-jet effect in the THz wave scattering by dielectric rod decorated with graphene strip

Dukhopelnykov

Sauleau

Garcia-Vigueras

et al. 2019

Journal of Applied Physics

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We consider the scattering of an H-polarized plane wave by an infinite dielectric rod with a conformal graphene strip of arbitrary angular width, placed at the rod rear side. Our analysis is based on the hypersingular integral equation for the current induced on the strip. Discretization of this equation is carried out by the Nystrom-type method, which has a guaranteed convergence. This meshless trusted computational instrument enables us to plot the dependences of the absorption cross-section (ACS) and the total scattering cross-section (TSCS) on the strip angular width and the frequency, in wide range from 1 GHz to 6 THz. We concentrate our analysis on studying the interplay between the broadband photonic-jet effect of dielectric rod and the reasonably high-Q resonances on the plasmon modes of graphene strip. It is found that as the photonic jet becomes brighter with higher frequencies, the plasmon-mode resonances become more intensive as well.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Graphene Conductivity and Plasmon Resonancesmentioning

confidence: 99%

Section: Graphene Conductivity and Plasmon Resonancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined plasmon-resonance and photonic-jet effect in the THz wave scattering by dielectric rod decorated with graphene strip

Dukhopelnykov

Sauleau

Garcia-Vigueras

et al. 2019

Journal of Applied Physics

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“…Besides of the DC tunability of its electron conductivity defined by the chemical potential, frequency, temperature, and relaxation time, a major feature of micro and nanosize graphene samples is their ability to support plasmon modes in the THz to infrared ranges [9,10]. Both flat and curved graphene strips attract attention today as easily fabricated tunable components of plasmonic antennas, waveguides, and sensors [11][12][13][14][15]. Recently, in [16] it was shown that a resonance graphene strip placed into the EMJ area of a circular dielectric rod enhances greatly the near field without increasing the radius or refractive index.…”

mentioning

confidence: 99%

Circular Dielectric Rod With Conformal Strip of Graphene as Tunable Terahertz Antenna: Interplay of Inverse Electromagnetic Jet, Whispering Gallery and Plasmon Effects

Dukhopelnykov¹,

Lucido

Sauleau

et al. 2021

IEEE J. Select. Topics Quantum Electron.

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We consider the radiation characteristics of a THz antenna made of a circular dielectric rod decorated with conformal graphene strip and illuminated by the field of a line magnetic current. The strip has arbitrary angular size and location and its surface impedance is characterized with Kubo theory. Our mathematically accurate analysis uses a dedicated hypersingular integral equation for the current induced on the strip. Discretization of this equation is carried out by the Nystrom-type method, which has a guaranteed convergence. We study the dependences of the powers radiated and absorbed in this configuration and also the directivity of antenna emission, in wide frequency range from 0 to 10 THz. They show very interesting interplay between the broadband inverse photonic-jet effect of lens-like dielectric rod and two types of resonances: on the moderate-Q plasmon modes of graphene strip and on the extremely high-Q whispering-gallery modes of the circular rod. Index Terms-circular dielectric rod, graphene strip, line current, integral equation, plasmon, inverse photonic jet I. INTRODUCTION OTH in THz and shorter frequency ranges, a ubiquitous element of almost every sensor is an integrated lens antenna, which concentrates the incoming electromagnetic waves on a miniature receiving circuit. Perhaps, the simplest design of a lens is a uniform optically transparent sphere or, in two-dimensional (2-D) case, circular cylinder, or rod. This is because such a sphere or a rod produces a remarkable near-field phenomenon, which at first obtained the name "nanojet" and later became known as "photonic jet" [1][2]. In fact, it should be, probably, called "electromagnetic jet" (EMJ), because this phenomenon can be found in all frequency ranges, if only the relative dielectric permittivity of sphere or rod is 4   and its radius is 2 R   , where  is the freespace wavelength [1,2]. If the radius gets larger, EMJ Manuscript received March 31, 2020.

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