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Proceedings Paper

Tuning localized plasmon resonance peaks in golden nanoparticle arrays
Author(s): Joonas Lehtolahti; Janne Laukkanen; Martti Kauranen; Markku Kuittinen
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Paper Abstract

Through numerical simulations we have shown that particle plasmon resonance wavelength is dependent mostly on the largest particle in an array of gold nanodisks. Mixing different sized nanodisks may shift the resonance peak wavelength from a few nanometers to tens of nanometers. The effect of period to the resonance peak strength was found to be dependent on the disk diameter in unexpected way. With smaller nanodisks increasing the period decreases peak absorption, but with larger still greatly sub-wavelength particles increasing the period can increase the absorption at resonance peak while decreasing absorption elsewhere on the spectrum giving great selective contrast.

Paper Details

Date Published: 8 May 2012
PDF: 8 pages
Proc. SPIE 8429, Optical Modelling and Design II, 842911 (8 May 2012); doi: 10.1117/12.924511
Show Author Affiliations
Joonas Lehtolahti, Univ. of Eastern Finland (Finland)
Janne Laukkanen, Univ. of Eastern Finland (Finland)
Martti Kauranen, Tampere Univ. of Technology (Finland)
Markku Kuittinen, Univ. of Eastern Finland (Finland)


Published in SPIE Proceedings Vol. 8429:
Optical Modelling and Design II
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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