Extinction measurements of metallic nanoparticles arrays as a way to explore the single nanoparticle plasmon resonances

The optical characterization of a single metallic nanostructure has a strong interest in the scientific community owing to its localized surface plasmon resonances. For a single nano-object, the simplest and the accepted optical characterization technique is dark-field spectroscopy, even if there ar...

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Bibliographic Details
Published in:Optics express 2018-03, Vol.26 (5), p.6439-6445
Main Authors: Movsesyan, Artur, Baudrion, Anne-Laure, Adam, Pierre-Michel
Format: Article
Language:English
Subjects:
Engineering Sciences
Micro and nanotechnologies
Microelectronics
Optics
Photonic
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Summary:The optical characterization of a single metallic nanostructure has a strong interest in the scientific community owing to its localized surface plasmon resonances. For a single nano-object, the simplest and the accepted optical characterization technique is dark-field spectroscopy, even if there are many drawbacks and a certain complexity to operate it. We propose here using extinction spectroscopy of nanoparticles ensembles to characterize optically a single nanostructure. The scattering spectrum of a single gold nanocylinder and the extinction spectrum of a well-chosen array show similar results. We perform an experimental and numerical comparative study to draw parallels between both techniques.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.26.006439