Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Geometric effects on far-field coupling between multipoles of nanoparticles in square arrays

Not Accessible

Your library or personal account may give you access

Abstract

Metallic nanoparticles organized in regular arrays exhibit an extraordinary spectral feature that arises from electromagnetic coupling between localized surface plasmons and constructive interference from diffracted far-field radiation. A rapid semianalytical description of coupling between dipoles and scattering modes is applied to examine the influence of nanoparticle size, dielectric, and interparticle separation on the occurrence, resonant wavelength, and intensity of the extraordinary spectral feature. Introducing a dynamic polarizability that includes higher-order electric poles into the description accurately characterizes plasmon resonances of larger particles. Previously unrecognized patterns and periodic variations in the extraordinary feature were observed to result from modulations in polarizability, as well as from interference of scattered modes that were distinguishable for the first time using the rapid semianalytic solution. Streamlined rational design of metamaterials with optimum optical properties using the rapid semianalytic coupled dipole approximation is considered.

© 2011 Optical Society of America

Full Article  |  PDF Article
More Like This
On the scaling behavior of dipole and quadrupole modes in coupled plasmonic nanoparticle pairs

J. P. Clarkson, J. Winans, and P. M. Fauchet
Opt. Mater. Express 1(5) 970-979 (2011)

Tuning of narrow geometric resonances in Ag/Au binary nanoparticle arrays

Jia Li, Ying Gu, and Qihuang Gong
Opt. Express 18(17) 17684-17698 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved