Superluminal light propagation in a monolayer graphene system under external magnetic field

Jamshidnejad, M.; Amirabadi, Eskandar Asadi; Miraboutalebi, S.; Asadpour, Seyyed Hossein

doi:10.1016/j.ijleo.2016.06.026

Cited by 5 publications

(2 citation statements)

References 59 publications

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“…It is also worth comparing our scheme with a previous one involving optical properties of graphene monolayer nanostructure [70]. The obvious difference is that the superluminal light propagation in our system is accompanied with a doublet gain to ensure that the light pulse does not attenuate as it passes through the medium, whereas in the proposal by Jamshidnejad et al, the superluminal light propagation is accompanied by amplification.…”

Section: Gain-assisted Superluminal Light Propagationmentioning

confidence: 91%

Absorption-free superluminal light propagation in a Landau-quantized graphene

2018

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In recent years, control of group velocity of light has attracted enormous interest. One of the main challenges is to realize an absorption-free fast or slow light propagation. Here, we study dispersion and absorption properties of a weak probe field in a Landau-quantized graphene and report a gain-assisted superluminal light propagation. Moreover, an attempt is made to develop an analytical expression and necessary parameters for switching the group velocity of the probe field from subluminal to superluminal. It's worth mentioning that large dephasing rate in graphene offers feasibility of superluminal propagation of ultrashort light pulses. Additionally, dynamical behavior of dispersion and absorption of a weak probe field in a closed-type graphene system is investigated, and it is found that the absorption and dispersion can be dramatically affected by both the relative phase of applied fields and the Rabi frequencies in such a way that a large transient gain can be achieved and a transient absorption can be completely eliminated.

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Section: Gain-assisted Superluminal Light Propagationmentioning

confidence: 91%

Absorption-free superluminal light propagation in a Landau-quantized graphene

2018

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“…However, Monolayer graphene has a wavelength-independent low absorptivity of about 2.3% in the visible and near-infrared (NIR) wavelength range [9][10][11][12] . Graphene can be deposited between some dielectric thin materials to enhance the absorptance of graphene [13] , with the development of ion-beam sputtering in techniques [14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Dual-band enhanced optical absorptance of graphene with resonant tunneling in total internal reflection regime

Zou

Zheng

2017

Optik

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We propose a stratified structure, where the monolayer graphene is sandwiched between two thin film stacks with optimized period number. A band-pass filter based on the stratified structure is realized. The dual-band enhanced optical absorptance of graphene with resonant tunneling in total internal reflection (TIR) regime is investigated theoretically. Both absorptance peaks are enhanced up to almost 100% in the pass-band filter based on resonant tunneling through a graphene sheet over the communication wavelength range due to the strong light field confinement. With the increasing of the bottom mirror layers, the values of the dual-band absorptance peaks improve accordingly while the peak locations are unchanged. The variation of the angle and wavelength can be exploited to realize tunable filters with good rejection.

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Quantum coherence-assisted secure communication of internet of things information via Landau-quantized graphene

Bashir

2023

Opt Quant Electron

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Superluminal light propagation in a monolayer graphene system under external magnetic field

Cited by 5 publications

References 59 publications

Absorption-free superluminal light propagation in a Landau-quantized graphene

Absorption-free superluminal light propagation in a Landau-quantized graphene

Dual-band enhanced optical absorptance of graphene with resonant tunneling in total internal reflection regime

Quantum coherence-assisted secure communication of internet of things information via Landau-quantized graphene

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