Abbreviated Journal Title
Appl. Phys. Lett.
Keywords
NANOPARTICLES; EXCITATION; DYNAMICS; METALS; Physics, Applied
Abstract
A dramatic enhancement of the thermally induced nonlinear optical response in compositionally heterogeneous plasmonic trimers is reported. It is demonstrated numerically that the nonlinear absorption performance of silver nanoparticle dimers under pulsed illumination can be enhanced by more than two orders of magnitude through the addition of only 0.1 vol. % of gold in the dimer gap. The nonlinear absorption performance of the resulting Ag-Au-Ag trimer exceeds the peak performance of isolated gold nanoparticles by a factor 40. This dramatic effect is enabled by cascaded plasmon resonance, resulting in extreme field concentration in the central nanoparticle of the trimer. The observed localized heat-generation, large optical response, and a predicted response time below 1 ns make these structures promising candidates for use in nonlinear optical limiting and optical switching.
Journal Title
Applied Physics Letters
Volume
106
Issue/Number
10
Publication Date
1-1-2015
Document Type
Article
DOI Link
Language
English
First Page
4
WOS Identifier
ISSN
0003-6951
Recommended Citation
Toroghi, Seyfollah; Lumdee, Chatdanai; and Kik, Pieter G., "Heterogeneous plasmonic trimers for enhanced nonlinear optical absorption" (2015). Faculty Bibliography 2010s. 6833.
https://stars.library.ucf.edu/facultybib2010/6833
Comments
Authors: contact us about adding a copy of your work at STARS@ucf.edu
"This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in the linked citation and may be found originally at Applied Physics Letters."