Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/193666

Download PDF (Published version) (Adobe Acrobat PDF, -1 bytes)

Title

Inhibition of multipolar plasmon excitation in periodic chains of gold nanoblocks

Author(s)

Ueno, Kosei;  Juodkazis, Saulius;  Mizeikis, Vygantas;  Ohnishi, Dai;  Sasaki, Keiji;  Misawa, Hiroaki

Abstract

Periodically corrugated chains of gold nanoblocks, fabricated with high precision by electron-beam lithography and lift-off techniques, were found to exhibit optical signatures of particle plasmon states in which relative contribution of longitudinal multipolar plasmons is significantly lower than that in equivalent rectangular gold nanorods. Plasmonic response of periodic chains is dominated by dipolar plasmon modes, which in the absence of multipolar exciations are seen as background-free and spectrally well-resolved extinction peaks at infrared (IR) wavelengths. This observation may help improve spectral parameters of IR plasmonic sub-wavelength antennae. Comparative studies of plasmon damping and dephasing in corrugated chains of nanoblocks and smooth rectangular nanorods are also presented.

Publication type

Journal article

Source

Optics Express, Vol. 15, no. 25 (Dec 2007), pp. 16527-16539

Publication year

2007

FOR Code(s)

0205 Optical Physics;  0903 Biomedical Engineering;  1113 Ophthalmology and Optometry

Keyword(s)

Electron beam lithography;  Gold nanoblocks;  Infrared radiation;  Multipolar plasmon excitation;  Nanostructures;  Particle plasmon states;  Plasmons;  Wavelengths

Publisher

Optical Society of America

ISSN

1094-4087

Publisher URL

http://dx.doi.org/10.1364/OE.15.016527

Copyright

Copyright © 2007 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/oe.15.016527. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Full text

Peer reviewed