Abstract:
Accuracy of Kirchhoff approximation (KA) for rough-surface electromagnetic wave scattering is studied by comparison with accurate numerical solutions in the context of three-dimensional dielectric surfaces. The Kirchhoff tangent plane approximation is examined without resorting to the principle of stationary phase. In particular, it is shown that this additional assumption leads to zero cross-polarized backscattered power, but not the tangent plane approximation itself. Extensive numerical results in the case of a bisinusoidal surface are presented for a wide range of problem parameters: height-to-period, wavelength, incidence angles, and dielectric constants. In particular, this paper shows that the range of validity inherent in the KA includes surfaces whose curvature is not only much smaller, but also comparable to the incident wavelength, with errors smaller than 5% in total reflectivity, thus presenting a detailed and reliable source for the validity of the KA in a three-dimensional fully polarimetric formulation. © 2017 Optical Society of America.
Registro:
Documento: |
Artículo
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Título: | Validity of the Kirchhoff approximation for the scattering of electromagnetic waves from dielectric, doubly periodic surfaces |
Autor: | Franco, M.; Barber, M.; Maas, M.; Bruno, O.; Grings, F.; Calzetta, E. |
Filiación: | Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Ciudad Universitaria, Int. Güiraldes 2160, Buenos Aires, CABA C1428EGA, Argentina Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Física, Av. Paseo Colón 850, Buenos Aires, C1063ACV, Argentina CONICET-Universidad de Buenos Aires, Instituto de Astronomía y Física del Espacio (IAFE), Ciudad Universitaria, Av. Cantilo S/N, Buenos Aires, C1428ZAA, Argentina California Institute of Technology, Mathematics Department, MS 217-51201 East California Blvd., Pasadena, CA 91125, United States CONICET-Instituto de Física de Buenos Aires (IFIBA), Buenos Aires, Argentina
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Palabras clave: | Circular waveguides; Electromagnetic waves; Surface scattering; Backscattered power; Dielectric surface; Incident wavelength; Kirchhoff approximations; Numerical solution; Principle of stationary phase; Problem parameters; Scattering of electromagnetic waves; Electromagnetic wave scattering |
Año: | 2017
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Volumen: | 34
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Número: | 12
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Página de inicio: | 2266
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Página de fin: | 2277
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DOI: |
http://dx.doi.org/10.1364/JOSAA.34.002266 |
Título revista: | Journal of the Optical Society of America A: Optics and Image Science, and Vision
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Título revista abreviado: | J Opt Soc Am A
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ISSN: | 10847529
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CODEN: | JOAOD
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10847529_v34_n12_p2266_Franco |
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Citas:
---------- APA ----------
Franco, M., Barber, M., Maas, M., Bruno, O., Grings, F. & Calzetta, E.
(2017)
. Validity of the Kirchhoff approximation for the scattering of electromagnetic waves from dielectric, doubly periodic surfaces. Journal of the Optical Society of America A: Optics and Image Science, and Vision, 34(12), 2266-2277.
http://dx.doi.org/10.1364/JOSAA.34.002266---------- CHICAGO ----------
Franco, M., Barber, M., Maas, M., Bruno, O., Grings, F., Calzetta, E.
"Validity of the Kirchhoff approximation for the scattering of electromagnetic waves from dielectric, doubly periodic surfaces"
. Journal of the Optical Society of America A: Optics and Image Science, and Vision 34, no. 12
(2017) : 2266-2277.
http://dx.doi.org/10.1364/JOSAA.34.002266---------- MLA ----------
Franco, M., Barber, M., Maas, M., Bruno, O., Grings, F., Calzetta, E.
"Validity of the Kirchhoff approximation for the scattering of electromagnetic waves from dielectric, doubly periodic surfaces"
. Journal of the Optical Society of America A: Optics and Image Science, and Vision, vol. 34, no. 12, 2017, pp. 2266-2277.
http://dx.doi.org/10.1364/JOSAA.34.002266---------- VANCOUVER ----------
Franco, M., Barber, M., Maas, M., Bruno, O., Grings, F., Calzetta, E. Validity of the Kirchhoff approximation for the scattering of electromagnetic waves from dielectric, doubly periodic surfaces. J Opt Soc Am A. 2017;34(12):2266-2277.
http://dx.doi.org/10.1364/JOSAA.34.002266