Polaritons in anisotropic materials with cylindrical geometry

Nobre, Eloneid Felipe; Filho, R. N. Costa; Farias, G. A.; Almeida, N. S.

doi:10.1103/physrevb.57.10583

Cited by 12 publications

(2 citation statements)

References 12 publications

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“…As can be seen bellow, there are significant changes if the system under consideration is a massive or coaxial cylinder. Similarly to the planar geometry, in the coaxial cylinder, the presence of interfaces causes the appearance of new branches in the dispersion relation and introduce alterations in the physical behavior of the energy, power flow and the velocity of transport of energy, in comparison with those obtained for a massive cylinder [12].…”

Section: Introductionmentioning

confidence: 99%

Study of effects of interfaces in the propagation of the energy by optical modes in coaxial cylinders

Nobre¹,

Moretzsonh²,

Vilela³

et al. 2006

Braz. J. Phys.

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We study the influence of the interfaces on the dispersion relation, energy and power flow of polaritons propagating in coaxial cylinders. We consider an infinite coaxial cylinder of internal and external radii designated by a and b, respectively, submitted to a magnetic dc field applied parallel to the z-axes. The presence of a magnetic field causes significant alterations in the modes of propagation of polaritons. The numerical results are obtained for the surface polaritons propagating in semiconductors cylinders of GaAs in presence of magnetic fields of 5 kG.

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Section: Introductionmentioning

confidence: 99%

Study of effects of interfaces in the propagation of the energy by optical modes in coaxial cylinders

Nobre¹,

Moretzsonh²,

Vilela³

et al. 2006

Braz. J. Phys.

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“…With the development of new techniques for the nanometer-size materials fabrication, electromagnetic excitations in crystals with cylindrical geometry have, recently, received considerable attention. The reason for that is because it has not only important physical differences, when compared to the plane geometry case, but also the knowledge of their properties is of fundamental importance to the technology of nanometer-size materials and optical devices [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Exciton-polaritons in cylindrical geometries

Vilela

Nobre

Farias

et al. 2004

phys. stat. sol. (c)

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PACS 71.36.+c, 71.55.Eq We present a theoretical description of the properties of exciton-polariton propagating in cylindrical geometry made up from spatially dispersive semiconductor material. Taking into account Maxwell's equations within the retardation effect regime, and using the exciton additional boundary condition, the exciton-polariton dispersion relation is obtained by solving a secular determinant. We present numerical results obtained for a cylinder filled up with the nitride semiconductor GaN. Our results show that the surface's geometry plays a significant role on the properties of the exciton-polariton.

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Optical properties of cylindrical interfaces

Nobre¹,

Vilela²,

Farias³

et al. 2007

Phys. Status Solidi (c)

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We are interested in the study of the optical properties of cylindrical interfaces by the analysis of the propagation of energy and power in coaxial cylinders. The numerical results are obtained for the surface polaritons propagating in semiconductors coaxial cylinders made of GaN and AlN. [3,6], updated the interest on the study of this kind of electromagnetic excitation. Particularly, the study of polaritons in microcavities has received a great deal of attention nowadays. Surface plasmon polaritons play a particularly important role in light-matter interactions at the nanometer scale, improving their performance in biology, nanotechnology, and materials sciences [4,7]. In the study reported here, we have analyzed the propagation of surface polaritons in coaxial cylinders made of GaN and AlN. First of all we focused our attention on the dispersion relation and we concentrate on the nonradiative modes, since these modes are important in optical communications. In sequence, we analyzed the energy density, the power flow and the energy transport velocity.

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Polaritons in anisotropic materials with cylindrical geometry

Cited by 12 publications

References 12 publications

Study of effects of interfaces in the propagation of the energy by optical modes in coaxial cylinders

Study of effects of interfaces in the propagation of the energy by optical modes in coaxial cylinders

Exciton-polaritons in cylindrical geometries

Optical properties of cylindrical interfaces

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