Terahertz relativistic spatial solitons in doped graphene metamaterials

The solution of input-output curves in an optical ring cavity containing Landau-quantized graphene is theoretically investigated taking the advantage of density-matrix method. It is found that under the action of strong magnetic and infrared laser fields, one can efficiently reduce the threshold of the onset of optical bistability (OB) at resonance condition. At non-resonance condition, we observed that graphene metamaterial can support the possibility to obtain optical multistability (OM), which is more practical in all-optical switching or coding elements. We present an analytical approach to elucidate our simulations. Due to very high infrared optical nonlinearity of graphene stemming from very unique and unusual properties of quantized Landau levels near the Dirac point, such controllability on OB and OM may provide new technological possibilities in solid state quantum information science. V C 2015 AIP Publishing LLC. [http://dx.

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“…[59][60][61][62] In Eq. (10), v R and v i characterize the dispersive and absorptive components of the probe susceptibility, respectively.…”

Section: Numerical Results and Analytical Modelmentioning

confidence: 99%

Realization of optical bistability and multistability in Landau-quantized graphene

Hamedi

Asadpour

2015

Journal of Applied Physics

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“…This value depends on the sample quality and the substrate used in experiments [64,65]. The electron concentration is ≃ × − N 5 10 cm 12 2 and the substrate dielectric constant is ϵ ≃ 4.5 r [66][67][68]. In the next step, the linear (a) and nonlinear (b) properties of susceptibility versus elliptical parameter θ when the probe light is in resonance situation are demonstrated in Fig.…”

Section: Resultsmentioning

confidence: 99%

Polarized dependence of nonlinear susceptibility in a single layer graphene system in infrared region

Solookinejad

2016

Physica B: Condensed Matter

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“…We are interested now in the possibility of formation of electromagnetic solitons [6] and bullets [5] in plane of graphene layer and effect of bistability for the electromagnetic waves propagating through a (multi)layered graphenedielectric structures. Electrodynamics nonlinearity comes from electron nonlinearity.…”

Section: B Nonlinear Electromagnetic Waves In the Multi Layered Gd Smentioning

confidence: 99%

Reshaping and capturing nonlinear electromagnetic and linear electron 2D waves in lossy graphene metamaterials. Graphene solid-state electron optics

Rapoport

Grimalsky

Castrejon-M.

et al. 2014

2014 20th International Conference on Microwaves, Radar and Wireless Communications (MIKON)

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We develop farther our "three-level" approach to graphene metamaterials including "metamaterial treatment" of 2D beams of electron (BE) in graphene with 2D inhomogeneous and nonlinear electromagnetic (EM) waves in graphene-dielecric (GD) multlayered structres. This approach can lead, in particular, to the development of graphene metamaterial solidstate electron optics (GMEO). A possibility of resonant behavior of the components of the electron disribution function in 2D "diffraction grating", with quasi 1D periodicity along a direction of beam propagation, is shown, and capturing electron beams by magnetic ring resonator is shown The theory of 2D EM pulse propagation through multilayered (GD) structure with electron nonlinearity in the strongly nonlinear "above threshold" regime is developed and new nonlinear 2D phenomena of a competition between "longitudinal" and "transfer" focusing is proposed. It is found that some critical value of losses exists. When the parameter of losses ν is equal to or less than 1.5×10 12 s -1 , nonlinear switching of a pulse to "predominantly transmission" regime can be observed. The critical value of ν can be easily achieved in real experimental situation.

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Terahertz relativistic spatial solitons in doped graphene metamaterials

Cited by 43 publications

References 35 publications

Realization of optical bistability and multistability in Landau-quantized graphene

Realization of optical bistability and multistability in Landau-quantized graphene

Polarized dependence of nonlinear susceptibility in a single layer graphene system in infrared region

Reshaping and capturing nonlinear electromagnetic and linear electron 2D waves in lossy graphene metamaterials. Graphene solid-state electron optics

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