Open AccessCorrelation of circular differential optical absorption with geometric chirality in plasmonic meta-atoms
Author(s) -
Jon C. Wilson,
Philipp Gutsche,
Sven Herrmann,
Sven Burger,
Kevin M. McPeak
Publication year - 2019
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.27.005097
Subject(s) - plasmon , chirality (physics) , optics , materials science , nanorod , absorption (acoustics) , atom (system on chip) , circular polarization , molecular physics , physics , nanotechnology , quantum mechanics , chiral symmetry breaking , computer science , nambu–jona lasinio model , embedded system , quark , microstrip
We report a strong correlation between the calculated broadband circular differential optical absorption (CDOA) and the geometric chirality of plasmonic meta-atoms with two-dimensional chirality. We investigate this correlation using three common gold meta-atom geometries: L-shapes, triangles, and nanorod dimers, over a broad range of geometric parameters. We show that this correlation holds for both contiguous plasmonic meta-atoms and non-contiguous structures which support plasmonic coupling effects. A potential application for this correlation is the rapid optimization of plasmonic nanostructure for maximum broadband CDOA.