Surface Plasmon Excitation on a Sphere Made of Left-Handed Material |
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Authors: | Alexandre Vial |
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Institution: | (1) Institut Charles Delaunay, Université de technologie de Troyes, CNRS FRE 2848 Laboratoire de Nanotechnologie et d'Instrumentation Optique 12, rue Marie Curie BP-2060, F-10010 Troyes Cedex, France |
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Abstract: | We introduce formulae in suitable form for the numerical computation of Mie coefficients and the scattered electrical field in the general case of a sphere with permitivity and permeability . The small particle limit is also investigated. We compute the extinction cross section of a negative index sphere, as well as intensity maps. Excitation of surface plasmons featuring narrow linewidths is observed, which can be attributed to the permitivity or the permeability of the sphere. |
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Keywords: | Mie theory Left-handed materials Plasmon resonance |
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