Efficient and intuitive method for the analysis of light scattering by a resonant nanostructure

Abstract : We present a semi-analytical formalism capable of handling the coupling of electromagnetic sources, such as point dipoles or free-propagating fields, with various kinds of dissipative resonances with radiation leakage, Ohmic losses or both. Due to its analyticity, the approach is very intuitive and physically-sound. It is also very economic in computational resources, since once the resonances of a plasmonic or photonic resonator are known, their excitation coefficients are obtained analytically, independently of the polarization, frequency or location of the excitation source. To evidence that the present formalism is very general and versatile, we implement it with the commercial software COMSOL, rather than with our in-house numerical tools.
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Qiang Bai, Mathias Perrin, Christophe Sauvan, Jean-Paul Hugonin, Philippe Lalanne. Efficient and intuitive method for the analysis of light scattering by a resonant nanostructure. Optics Express, Optical Society of America, 2013, 21 (22), pp.27371 (1-12). ⟨10.1364/OE.21.027371⟩. ⟨hal-00917914⟩

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