Light scattering resonances in arbitrarily shaped one-dimensional reentrant surfaces

Pedro Negrete-Regagnon; Rafael Hernandez-Walls; Victor Ruiz-Cortes

doi:10.1117/12.401664

26 September 2000 Light scattering resonances in arbitrarily shaped one-dimensional reentrant surfaces

Pedro Negrete-Regagnon, Rafael Hernandez-Walls, Victor Ruiz-Cortes

Proceedings Volume 4100, Scattering and Surface Roughness III; (2000) https://doi.org/10.1117/12.401664
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Multiple scattering and shape-related effects are an active and important field of research in the area of diffraction and scattering of electromagnetic waves by rough surfaces. Most of the rigorous numerical techniques for dealing with this problem were limited to the treatment of single-valued surfaces. We have extended the formulation of Mendoza- Suarez and Mendez (1997) for dealing with multi-valued profile functions in order to study the scattering of reentrant surfaces or cavities in both, the near and far-field. We have evaluated the near-field in circular cavities with narrow entrances, as well as in the case of clusters of rods or cylinders. Resonant frequencies are clearly identified for these structures. We have also found that our model could be useful to predict wave-induced oscillations in harbors of arbitrary geometry. This comes form the fact that the mathematical formulation of the problem of light scattering by cavities (in the case of p polarization) is similar to the one employed in the case of harbors of arbitrary shape, when a water wave arrives at its entrance (Hwang and Tuck, 1970; Lee, 1971). The results obtained with our model are in close agreement with previously reported theories and experimental data.

Citation Download Citation

Pedro Negrete-Regagnon, Rafael Hernandez-Walls, and Victor Ruiz-Cortes "Light scattering resonances in arbitrarily shaped one-dimensional reentrant surfaces", Proc. SPIE 4100, Scattering and Surface Roughness III, (26 September 2000); https://doi.org/10.1117/12.401664

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