Modal Analysis of Nanoplasmonic Multilayer Spherical Resonators

Author

Mock, Adam

Author_Institution

Sch. of Eng. & Technol. ET, Central Michigan Univ., Mount Pleasant, MI, USA

Volume

3

Issue

4

fYear

2011

Firstpage

765

Lastpage

776

Abstract

The resonance wavelengths, quality factors, and electromagnetic field profiles of multilayered metal plasmonic nanospheres are presented. Quantitative results are obtained using a recently developed finite-difference time-domain algorithm suited for structures with spherical invariance. The resonance modes of multilayered metal plasmonic nanospheres are explained as hybrid modes consisting of surface plasmon polariton resonances associated with each metal-dielectric interface. Multilayered metallic nanospheres exhibit complicated and numerous modes as the number of layers increases; however, the highest quality factor hybrid modes are those associated with the odd-like modes of each individual metal layer. Applications in nanoplasmonic lasers are highlighted.

Keywords

finite difference time-domain analysis; metal-insulator boundaries; multilayers; nanostructured materials; plasmonics; polaritons; resonators; surface plasmon resonance; electromagnetic field profiles; finite difference time-domain algorithm; metal plasmonic nanospheres; metal-dielectric interface; modal analysis; multilayered metallic nanospheres; nanoplasmonic lasers; nanoplasmonic multilayer spherical resonators; quality factor hybrid modes; quality factors; resonance modes; resonance wavelengths; spherical invariance; surface plasmon polariton resonances; Gold; Nonhomogeneous media; Permittivity; Plasmons; Q factor; Resonant frequency; Nanocavities; plasmonics; subwavelength structures; theory and design;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2011.2163388

Filename

5970074