Solitons in graphene

Cheh, Jigger; Zhao, Hong

doi:10.48550/arxiv.1107.3696

Cited by 8 publications

(10 citation statements)

References 32 publications

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“…Recently, optical solitons have also been investigated in graphene both experimentally and theoretically [46][47][48][49]. The direct evidence of solitons in graphene by means of molecular dynamics simulations and mathematical analysis has been demonstrated [50]. It has been reported that graphene exhibits an extremely strong nonlinear optical response in the THz or infrared regime [51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Slow light propagation and bistable switching in a graphene under an external magnetic field

2015

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In this letter, we show the possibility of controlling the optical bistability and group index switching in graphene under the action of strong magnetic and infrared laser fields. By using quantum-mechanical density matrix formalism, we obtain the equations of motion that govern the optical response of graphene in strong magnetic and optical fields. We found that by properly choosing the parameters of the system, the bistable behaviors and group velocity can be controlled. These results may have potential applications in telecommunication and optical information processing.

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Section: Introductionmentioning

confidence: 99%

Slow light propagation and bistable switching in a graphene under an external magnetic field

2015

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“…In the dressed-state picture, this case corresponds to the profound interference situation because the eigenvalues of two of the dressed states intersect. [56] For further discussion about the role of elliptical parameter θ on linear absorption and Kerr nonlinearity of the medium, we display the features of linear absorption and Kerr nonlinearity of medium versus θ in Fig. 4.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Kerr nonlinearity in a quantized four-level graphene nanostructure

Solookinejad¹,

Panahi²,

Ahmadi³

et al. 2016

Chinese Phys. B

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In this paper, a new model is proposed for manipulating the Kerr nonlinearity of right-hand circular probe light in a monolayer of graphene nanostructure. By using the density matrix equations and quantum optical approach, the third-order susceptibility of probe light is explored numerically. It is realized that the enhanced Kerr nonlinearity with zero linear absorption can be provided by selecting the appropriate quantities of controllable parameters, such as Rabi frequency and elliptical parameter of elliptical polarized coupling field. Our results may be useful applications in future all-optical system devices in nanostructures.

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“…. The electron concentration can be estimated to be × N 5 10 12 cm −2 and the substrate dielectric constant turns out to be ε 4.5 r [48][49][50]. These parameter values introduced in the experiment [31,33,34,45,46] rely on the sample quality and the substrate.…”

Section: The Theoretical Model and Basic Equationsmentioning

confidence: 99%

High-efficiency infrared four-wave mixing signal in monolayer graphene

Li¹,

Liu²,

Zhu³

et al. 2016

Laser Phys.

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A scheme of enhanced four-wave mixing (FWM) signal is exploited in graphene under an external magnetic field via multiphoton quantum destructive interference. By solving the coupled Schrödinger-Maxwell formalism, a time-dependent analysis performs the integrated analytical expressions of the input probe pulse and generated FWM field. Taking into account the tunable optical transition frequency between the Landau levels (LLs) in graphene, it is found that the generated FWM signal in the infrared region can be significantly enhanced and its efficiency is nearly 60%. As a result, the proposed magnetised graphene system may provide a striking potential for generating long-wavelength radiation.

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Solitons in graphene

Cited by 8 publications

References 32 publications

Slow light propagation and bistable switching in a graphene under an external magnetic field

Slow light propagation and bistable switching in a graphene under an external magnetic field

Enhanced Kerr nonlinearity in a quantized four-level graphene nanostructure

High-efficiency infrared four-wave mixing signal in monolayer graphene

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