Open AccessOn the absorption and electromagnetic field spectral shifts in plasmonic nanotriangle arrays
Author(s) -
Sylvain Vedraine,
Renjie Hou,
P. R. Norton,
François LagugnéLabarthet
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.013308
Subject(s) - electric field , optics , plasmon , electromagnetic field , finite difference time domain method , absorption (acoustics) , raman spectroscopy , electromagnetic radiation , absorbance , field (mathematics) , polarization (electrochemistry) , materials science , raman scattering , physics , chemistry , mathematics , quantum mechanics , pure mathematics
The behavior of the electromagnetic field interaction with gold nanotriangles organized in bow-tie arrays is investigated. A side-by-side comparison between the measured absorbance of the array and the modelled integrated electric field resonances confined around the gold structures is presented and discussed to explain the spectral shift between both parameters. Finite difference time domain calculations and Raman measurements of gold triangles of different sizes and periodicity are systematically performed. Numerical calculations show that the spectral maximum of the electric field varies in distinct areas over the metallic structures.