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Inversion of absorption and scattering at plasmon resonance in nanoparticles with a metallic sheath

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Abstract

Numerical simulation of the optical properties of spherical nanostructures comprising an absorbing (amplifying) insulating core and a metallic sheath is carried out under the conditions of plasmon resonance. A decrease in the absorption by the core is shown to increase the cross sections of absorption and scattering by the nanostructure in the plasmon resonance spectral range. If the core exhibits amplification, an extra resonance arises, causing a change in the dependence of the absorption cross section on the amplification factor. Conditions for such a resonance to appear are considered.

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Authors and Affiliations

  1. Vavilov State Optical Institute, All-Russia Research Center, Birzhevaya Liniya 12, St. Petersburg, 199034, Russia

    A. I. Sidorov

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  1. A. I. Sidorov
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Original Russian Text © A.I. Sidorov, 2006, published in Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 76, No. 10, pp. 136–139.

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Sidorov, A.I. Inversion of absorption and scattering at plasmon resonance in nanoparticles with a metallic sheath. Tech. Phys. 51, 1386–1389 (2006). https://doi.org/10.1134/S1063784206100239

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  • DOI: https://doi.org/10.1134/S1063784206100239

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