Enhanced optical transmission mediated by localized plasmons in anisotropic, three-dimensional nanohole arrays.
This paper describes three-dimensional (3D) nanohole arrays whose high optical transmission is mediated more by localized surface plasmon (LSP) excitations than by surface plasmon polaritons (SPPs). First, LSPs on 3D hole arrays lead to optical transmission an order of magnitude higher than 2D planar hole arrays. Second, LSP-mediated transmission is broadband and more tunable than SPP-enhanced transmission, which is restricted by Bragg coupling. Third, for the first time, two types of surface plasmons can be selectively excited and manipulated on the same plasmonic substrate. This new plasmonic substrate fabricated by high-throughput nanolithography techniques paves the way for cutting-edge optoelectronic and biomedical applications.
Yang
Jiun-Chan
JC
Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
Gao
Hanwei
H
Suh
Jae Yong
JY
Zhou
Wei
W
Lee
Min Hyung
MH
Odom
Teri W
TW
D049329:Nanostructures; D020349:Surface Plasmon Resonance