Selective Excitation of Plasmon Resonances of Single Au Triangles by Polarization-Dependent Light Excitation

The plasmonic properties of single Au triangular nanoprisms are investigated using photoemission electron microscopy with particular emphasis on polarization dependence. Two localized surface plasmon resonances (LSPRs) are studied, namely, the in-plane dipolar and quadrupolar plasmon excitations. Ex...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physical chemistry. C 2012-07, Vol.116 (27), p.14591-14598
Main Authors: Awada, Chawki, Popescu, Traian, Douillard, Ludovic, Charra, Fabrice, Perron, Antoine, Yockell-Lelièvre, Hélène, Baudrion, Anne-Laure, Adam, Pierre-Michel, Bachelot, Renaud
Format: Article
Language:English
Subjects:
Applied sciences
Collective effects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Crystalline state (including molecular motions in solids)
Electron states
Electronics
Engineering Sciences
Exact sciences and technology
Exchange, correlation, dielectric and magnetic functions, plasmons
Micro and nanotechnologies
Microelectronics
Molecular electronics, nanoelectronics
Optics
Photonic
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Structure of solids and liquids
crystallography
Theory of crystal structure, crystal symmetry
calculations and modeling
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The plasmonic properties of single Au triangular nanoprisms are investigated using photoemission electron microscopy with particular emphasis on polarization dependence. Two localized surface plasmon resonances (LSPRs) are studied, namely, the in-plane dipolar and quadrupolar plasmon excitations. Experimental maps of the near-field spatial distribution upon polarization and wavelength of the exciting field are interpreted in the framework of a group theory description and finite difference time domain simulations. This work demonstrates the selective excitations, by lifting of degeneracy, of the different LSPR eigenmodes at the single object level and opens ways for the active control of the angular radiation patterns of optical nanoantennas. This approach is general and applies to any nano-object, whatever its initial shape symmetry.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp303475c