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Your search keyword '"A. A. Maradudin"' showing total 47 results
Start Over Author "A. A. Maradudin" Publisher elsevier b.v.
47 results on '"A. A. Maradudin"'

15. Surface plasmon polariton propagation near an index step

Author

Leskova, T.A., Maradudin, A.A., and Zierau, W.

Subjects
*OPTICAL detectors, *PLASMONS (Physics), *POLARITONS, *DIELECTRICS
Abstract

Abstract: In this work, we study theoretically the scattering of p-polarized light of frequency ω from, and its transmission through, a system consisting of a dielectric medium (prism) characterized by a dielectric constant ϵ 0 in the region x 3 > D; a metal film characterized by a complex, frequency-dependent dielectric function ϵ 1(ω) in the region 0< x 3 < D; a dielectric film characterized by a dielectric constant ϵ 2 in the region ζ(x 1)< x 3 <0; and vacuum (ϵ 3 =1) in the region x 3 < ζ(x 1). The light, whose plane of incidence is the x 1 x 3-plane, is incident through the prism. For the surface profile function ζ(x 1) we assume the form ζ(x 1)=−dθ(x 1)θ(L − x 1), where θ(x 1) is the Heaviside unit step function. Thus, we have a dielectric film of thickness d and dielectric constant ϵ 2 covering the part of the lower surface (x 3 =0) of the metal film defined by 0< x 1 < L. The reduced Rayleigh equation for the amplitude of the light scattered back into the prism, R(q|k), is derived, as is the reduced Rayleigh equation for the amplitude of the light transmitted into the vacuum, T(q|k). These integral equations are solved numerically and the results are used to calculate the intensity of the scattered field in the near- and far-field regions, and the intensity of the transmitted light in the near-field region, for several values of L and of the wavelength of the incident light. The results provide information about the scattering of the surface plasmon polariton at the metal–vacuum interface, excited by the incident light, by index steps on that interface, which can be used to determine the thickness of the dielectric film d, its extent L, and its dielectric constant ϵ 2. [Copyright &y& Elsevier]

Published
2005
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16. The design of one-dimensional randomly rough surfaces that act as Collett–Wolf sources

Author

Leskova, T.A., Maradudin, A.A., and Muñoz-Lopez, J.

Subjects
*GAUSSIAN beams, *GAUSSIAN processes, *SPECTRAL energy distribution, *SIMULATION methods & models
Abstract

Abstract: A method is presented for designing a one-dimensional perfectly conducting randomly rough surface which, when illuminated at normal incidence by an s-polarized Gaussian beam, produces a scattered field whose cross-spectral density function in the mean scattering plane is that of a Collett–Wolf source. The method is validated by computer simulation calculations. [Copyright &y& Elsevier]

Published
2004
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17. Light scattering from anisotropic, randomly rough, perfectly conducting surfaces

Author

Simonsen, Ingve, Kryvi, Jacob B., Maradudin, Alexei A., and Leskova, Tamara A.

Subjects
*LIGHT scattering, *ANISOTROPY, *COMPUTER simulation, *ELECTROMAGNETIC wave scattering, *ELECTROMAGNETIC fields, *POLARIZED beams (Nuclear physics), *SURFACES (Physics)
Abstract

Abstract: An approach is introduced for performing rigorous numerical simulations of electromagnetic wave scattering from randomly rough, perfectly conducting surfaces. It is based on a surface integral technique, and consists of determining the unknown electric surface current densities from which the electromagnetic field everywhere can be determined. The method is used to study the scattering of a p-polarized beam from an anisotropic Gaussian, randomly rough, perfectly conducting surface. It is demonstrated that the surface anisotropy gives rise to interesting and pronounced signatures in the angular intensity distribution of the scattered light. The origins of these features are discussed. [Copyright &y& Elsevier]

Published
2011
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