Propagation of three-dimensional bipolar ultrashort electromagnetic pulses in an inhomogeneous array of carbon nanotubes

Fedorov, E. G.; Жуков, А. В.; Bouffanais, Roland; Timashkov, Alexander P.; Malomed, Boris A.; Leblond, Hervé; Mihalache, Dumitru; Rosanov, N. N.; Белоненко, М. Б.

doi:10.1103/physreva.97.043814

Cited by 15 publications

(15 citation statements)

References 41 publications

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“…Following the approach elaborated in previous works (see Ref. [32] and references therein), for the initial condition we take a product of the "snapshot" of the dimensionless projection Ψ (ζ, τ 0 ) of the field's vector potential onto the ξ-axis of the CNTs at fixed time moment, τ = τ 0 , and the initial distribution of the field in the (ξ, υ) plane, orthogonal to the propagation direction of the pulse:…”

Section: Numerical Resultsmentioning

confidence: 99%

“…When the electromagnetic pulse interacts with the HED layer, in the general case the incident pulse splits in transmitted and reflected waver packets. The ratio of their energies depends on various factors, including characteristics of the incident pulse, as well as parameters of the layer with an increased electron concentration [30][31][32]. As characteristics of the result of the interaction of the ultrashort pulse with the layer, we define transmission and reflection coefficients, following Refs.…”

Section: Characteristics Of the Short-pulse's Fieldmentioning

confidence: 99%

“…As characteristics of the result of the interaction of the ultrashort pulse with the layer, we define transmission and reflection coefficients, following Refs. [31,32]:…”

Section: Characteristics Of the Short-pulse's Fieldmentioning

confidence: 99%

“…[29]). For example, as a result of the interaction of the ultrashort pulses with a layer carrying high electron density (HED), selective nature of the pulse scattering by such a layer has been established, offering new possibilities for developing light control methods in micro-and nanostructures [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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External light control of three-dimensional ultrashort far-infrared pulses in an inhomogeneous array of carbon nanotubes

Fedorov,

Zhukov,

Bouffanais

et al. 2021

Preprint

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We present a study of the propagation of three-dimensional (3D) bipolar electromagnetic ultrashort pulses in an inhomogeneous array of semiconductor carbon nanotubes (CNTs) in the presence of a control high-frequency (HF) electric field. The inhomogeneity is present in the form of a layer with an increased concentration of conduction electrons, which acts as a barrier for the propagation of ultrashort electromagnetic pulses through the CNT array. The dynamics of the pulse is described by a nonlinear equation for the vector potential of the electromagnetic field (it takes the form of a 3D generalization of the sine-Gordon equation), derived from the Maxwell's equations and averaged over the period of the HF control field. By means of systematic simulations, we demonstrate that, depending on the amplitude and frequency of the HF control, the ultrashort pulse approaching the barrier layer either passes it or bounces back. The layer's transmissivity for the incident pulse is significantly affected by the amplitude and frequency of the HF control field, with the reflection coefficient nearly vanishing in intervals that make up a discrete set of transparency windows, which resembles the effect of the electromagnetically-induced transparency.Having passed the barrier, the ultrashort pulse continues to propagate, keeping its spatiotemporal integrity. The results may be used for the design of soliton valves, with the transmissivity of the soliton stream accurately controlled by the HF field.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Characteristics Of the Short-pulse's Fieldmentioning

confidence: 99%

“…As characteristics of the result of the interaction of the ultrashort pulse with the layer, we define transmission and reflection coefficients, following Refs. [31,32]:…”

Section: Characteristics Of the Short-pulse's Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

External light control of three-dimensional ultrashort far-infrared pulses in an inhomogeneous array of carbon nanotubes

Fedorov,

Zhukov,

Bouffanais

et al. 2021

Preprint

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“…Так, была предложена модель распространения светового импульса в неоднородной среде. Подобная среда дает возможность управлять не только скоростью распространения, но и, например, поперечной структурой [11][12][13][14]. Заметим, что на практике имеются затруднения в создании сред такого рода, включающих в себя УНТ и обладающих пространственно модулированным показателем преломления.…”

Section: Introductionunclassified

Световые Пули В Периодически Неоднородной Среде Ориентированных Углеродных Нанотрубок В Оптическом Резонаторе

Белоненко¹,

Двужилов²,

Двужилова³

et al. 2019

Журнал Технической Физики

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The problem of the propagation dynamics of three-dimensional ultimately short optical pulses in an optical cavity in a periodically inhomogeneous medium of oriented carbon nanotubes is considered. It is shown numerically that such pulses demonstrate stable and sustainable propagation. In addition, it is shown that one can control for the pulse propagation rate and modify the pulse shape by varying parameters of the inhomogeneous medium.

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Extremely short 3D Bessel pulses in an optically anisotropic photonic crystal made from CNTs with account for nonlinear absorption and pumping

et al. 2023

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We present a theoretical and numerical study of the dynamics of diffractionless three-dimensional (3D) extremely short optical pulses with a Bessel cross-section in an optically anisotropic medium with a spatially modulated refractive index (known as photonic crystal) based on carbon nanotubes of the zig-zag type. The nonlinear absorption is taken into account based on experimental data, as well as the effects associated with the external pump field. Through numerical simulations, it was found that in such an optically anisotropic photonic crystal, Bessel pulses propagate stably over times of several dispersion lengths, while dissipative solitons arise during the evolution of pulses.The influence of the parameters of the anisotropic photonic crystal-e.g., the depth and period of modulation of the refractive index and anisotropy parameters-on the evolution of pulses, in particular, their shape and group velocity, is established.

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Propagation of three-dimensional bipolar ultrashort electromagnetic pulses in an inhomogeneous array of carbon nanotubes

Cited by 15 publications

References 41 publications

External light control of three-dimensional ultrashort far-infrared pulses in an inhomogeneous array of carbon nanotubes

External light control of three-dimensional ultrashort far-infrared pulses in an inhomogeneous array of carbon nanotubes

Световые Пули В Периодически Неоднородной Среде Ориентированных Углеродных Нанотрубок В Оптическом Резонаторе

Extremely short 3D Bessel pulses in an optically anisotropic photonic crystal made from CNTs with account for nonlinear absorption and pumping

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