Time-spatial structure of airy pulse in non-stationary environment

Nerukh, A.; Kuryzheva, O. V.; Benson, T.M.

doi:10.1007/s11082-017-1295-x

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The fields of scattered waves can be determined in several ways. The most common techniques in the electrodynamics of nonstationary media implement either the introduction of dimensionless timelike variables in Maxwell's or wave equations [38][39][40], integral equations [41][42][43], or eikonal equations [44]. Here, we use an approach which is commonly used for solving plasma physics tasks [26,35,45].…”

Section: A Amplitude Relations For Scattered Wavesmentioning

confidence: 99%

Temporally modulated metamaterial based on a multilayer graphene structure

Masyukov

Grebenchukov²

2021

Phys. Rev. B

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The recently developed concept of time-varying metamaterials paves the way for advanced methods of electromagnetic property modulation, such as magnet-free isolators, frequency converters, and other nonreciprocal photonic components. Here, we analyze the metamaterial based on the periodically arranged temporally modulated graphene layers via a steplike graphene Fermi level. The material properties are described by the effective medium theory. The electromagnetic wave temporal scattering phenomenon caused by rapid steplike graphene Fermi level switching is considered. It is demonstrated that the frequency of scattered waves increases as the Fermi level grows rapidly and vice versa. The relation between the amplitudes of forward-and backward-scattered waves is found using the Laplace transform technique. The proposed concept allows us to efficiently generate frequency harmonics under instant switching of the graphene Fermi level at a few meV. Our investigation provides a basement for the realization of temporally modulated multilayer structures based on functional tunable materials as power-efficient frequency converters.

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Section: A Amplitude Relations For Scattered Wavesmentioning

confidence: 99%

Temporally modulated metamaterial based on a multilayer graphene structure

Masyukov

Grebenchukov²

2021

Phys. Rev. B

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“…Механизм взаимодействия импульса Эйри с одной границей отличается от случая слоя. Поле, прошедшее через плоскую границу, имеет вид [11] Сравнивая процесс взаимодействия импульса со слоем (две границы нестационарной среды) и с полупространством (одна граница нестационарной среды), следует отметить существенное влияние переотражений вторичных импульсов от границ слоя, которые отсутствуют в случае полупространства, ограниченного одной плоской границей.…”

Section: анализ структуры поля в начале диэлектрического слояunclassified

Transformation of the airy pulse at temporary jump of the dielectric permittivity of the medium

Nerukh¹,

Kuryzheva²

2018

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The spatio-temporal problem of interaction of the Airy electromagnetic pulse and a plane dielectric layer is solved in the case of a permittivity sharp change in a layer at zero moment of time. Expressions for the field inside the layer are obtained and the influence of the starting parameter on the position of the pulse inside the layer is shown. The evolution of the pulse in media with different refractive index is analyzed. A comparative analysis of the interaction of the Airy pulse with a plane layer between two dielectric media with a dielectric layer is carried out. The influence of pulse reflections from the layer boundaries on its shape and location is analyzed. From the analysis of the obtained results it follows that the choice of the initial space-time parameter affects the location of the pulse in the layer, and the transition of the signal to a medium with a larger (lower) permittivity results in the amplitude increase of oscillations and the main lobe shape change.

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