Theoretical study of nonlocal effects in the optical response of metallic nanoshells

Railing Chang; P.T. Leung

doi:10.1117/12.629076

17 November 2005 Theoretical study of nonlocal effects in the optical response of metallic nanoshells

Railing Chang, P.T. Leung

Proceedings Volume 6002, Nanofabrication: Technologies, Devices, and Applications II; 60020V (2005) https://doi.org/10.1117/12.629076
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

The optical response of metallic nanoshell which includes coated dielectric particles is investigated in the longwavelength limit in which the nonlocal response of the metal is taken into account. Using our recent formalism which calculates the nonlocal multipole polarizability of such a shell, we have studied how these nanoshells interact with both the far field and near field of a light source. For the far field case, both absorption and scattering cross sections for an incident plane wave are calculated in the dipole approximation. For the near field case, we study how the fluorescence properties of an emitting molecule in the vicinity of a nanoshell are affected, by including all higher multipolar response of the shell. It is found that the nonlocal effects are most prominent for higher order multipoles, and hence for the description of molecules in close proximity interacting with the nanoshell.

Citation Download Citation

Railing Chang and P.T. Leung "Theoretical study of nonlocal effects in the optical response of metallic nanoshells", Proc. SPIE 6002, Nanofabrication: Technologies, Devices, and Applications II, 60020V (17 November 2005); https://doi.org/10.1117/12.629076

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