Cherenkov radiation in a planarly layered waveguide in the case of polarized waves

Barrera-Figueroa, V.; Rabinovich, Vladimir

doi:10.1007/s40590-016-0107-9

Cited by 5 publications

(3 citation statements)

References 49 publications

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“…The first step for taking advantage of these applications is a thorough analysis of CR. Hereby, this radiation has been analyzed in different kinds of materials and structures such as dispersive dielectric media with frequency-dependent permittivity [11,12], isotropic planar layered waveguides [13], left-handed materials [14], anisotropic double-negative metamaterials [15], isotropic chiral media [16], and the two-dimensional graphene plane [17]. Quantum effects, including the coupling between the electron spin and the angular momentum of radiated light have been also investigated [18].…”

Section: Introductionmentioning

confidence: 99%

“…The first step towards taking advantage of these applications is a thorough analysis of CR. Hereby, this radiation has been analyzed in different kinds of materials such as dispersive dielectric media with frequency-dependent permittivity [12,13], isotropic planar layered waveguides [14], left-handed materials [15], various kinds of metamaterials * Author to whom any correspondence should be addressed. including metallic slits [16], and parallel wires [17], anisotropic double-negative metamaterials [18], isotropic chiral media [19] and structures such as two-dimensional graphene plane [20,21], and gyrotropic plasmonic structures with nonreciprocal response which makes CR spectrum asymmetric and highly dependent on the direction of the electron beam [22].…”

Section: Introductionmentioning

confidence: 99%

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Cherenkov radiation in a bianisotropic medium with magnetoelectric effect

Fakhrzadeh,

Shahabadi,

Talebi

2024

J. Phys. D: Appl. Phys.

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Cherenkov radiation has been extensively explored in a large variety of media; however, its characteristics in a medium showing both magnetoelectric and anisotropy effect are not addressed so far. This study aims to address this gap by analytically investigating Cherenkov radiation in a dispersive bianisotropic medium with magnetoelectric effect. In this research, founded upon a vector-potential approach, we demonstrate that a notable feature such as double cones of Cherenkov radiation with different angles can be formed due to magnetoelectric coupling in bianisotropic media. We also calculate emitted electromagnetic fields to obtain radiated power and momentum-resolved electron energy-loss spectra for a medium with varying magnetoelectric coefficients, as well as for a medium without magnetoelectric effect in order to illustrate the impact of this coupling on the characteristics of the Cherenkov radiation and propose methods for characterization of magnetoelectric materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cherenkov radiation in a bianisotropic medium with magnetoelectric effect

Fakhrzadeh,

Shahabadi,

Talebi

2024

J. Phys. D: Appl. Phys.

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“…The CR in waveguides with dielectric filling has been widely discussed in the literature (for an early review see [1] and references given in [6]). In particular, special attention has been paid to the radiation on periodical structures inside the waveguide (see, for example, [7][8][9][10][11][12] and references therein). In [7] the radiation from a charged particle is considered inside an infinite waveguide completely filled with a layered (spatially periodic) medium.…”

Section: Introductionmentioning

confidence: 99%

Self-amplification of radiation from an electron bunch inside a waveguide filled with periodic medium

et al. 2020

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We investigate the radiation from a bunch of relativistic electrons moving along the cylindrical waveguide axis, assuming that the waveguide is partially loaded by a medium with periodic dielectric permittivity and magnetic permeability. The spectral distribution of the radiation energy flux through the cross section of the waveguide is studied at large distances from the medium. The analysis is based on the corresponding exact solution of Maxwell equations for the case of a single electron moving along the waveguide axis. The results of numerical calculations are presented in the special case of layered medium consisting of a finite number of dielectric plates separated by vacuum gaps. We show that under certain conditions on the problem parameters the quasi-coherent Cherenkov radiation generated by the electron bunch inside the plates is self-amplified at certain waveguide modes. A visual explanation of this phenomenon is provided that reproduces the main features to rather good accuracy.

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