Magnetic circular dichroism of non-local surface lattice resonances in magnetic nanoparticle arrays

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Magnetic circular dichroism of non-local surface lattice resonances in magnetic nanoparticle arrays. / Kataja, Veli; Pourjamal, Sara; Van Dijken, Sebastiaan.

julkaisussa: Optics Express, Vuosikerta 24, Nro 4, 22.02.2016, s. 3562-3571.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Kataja, Veli ; Pourjamal, Sara ; Van Dijken, Sebastiaan. / Magnetic circular dichroism of non-local surface lattice resonances in magnetic nanoparticle arrays. Julkaisussa: Optics Express. 2016 ; Vuosikerta 24, Nro 4. Sivut 3562-3571.

Bibtex - Lataa

@article{399e7e0ab27245f98bcc091b70fc2ef2,
title = "Magnetic circular dichroism of non-local surface lattice resonances in magnetic nanoparticle arrays",
abstract = "Subwavelength metallic particles support plasmon resonances that allow extreme confinement of light down to the nanoscale. Irradiation with left- and right hand circularly polarized light results in the excitation of circular plasmon modes with opposite helicity. The Lorenz force lifts the degeneracy of the two modes in magnetic nanoparticles. Consequently, the confinement and frequency of localized surface plasmon resonances can be tuned by an external magnetic field. In this paper, we experimentally demonstrate this effect for nickel nanoparticles using magnetic circular dichroism (MCD). Besides, we show that non-local surface lattice resonances in periodic arrays of the same nanoparticles significantly enhance the MCD signal. A numerical model based on the modified long wavelength approximation is used to reproduce the main features in the experimental spectra and provide design rules for large MCD effects in sensing applications.",
author = "Veli Kataja and Sara Pourjamal and {Van Dijken}, Sebastiaan",
year = "2016",
month = "2",
day = "22",
doi = "10.1364/OE.24.003562",
language = "English",
volume = "24",
pages = "3562--3571",
journal = "Optics Express",
issn = "1094-4087",
number = "4",

}

RIS - Lataa

TY - JOUR

T1 - Magnetic circular dichroism of non-local surface lattice resonances in magnetic nanoparticle arrays

AU - Kataja, Veli

AU - Pourjamal, Sara

AU - Van Dijken, Sebastiaan

PY - 2016/2/22

Y1 - 2016/2/22

N2 - Subwavelength metallic particles support plasmon resonances that allow extreme confinement of light down to the nanoscale. Irradiation with left- and right hand circularly polarized light results in the excitation of circular plasmon modes with opposite helicity. The Lorenz force lifts the degeneracy of the two modes in magnetic nanoparticles. Consequently, the confinement and frequency of localized surface plasmon resonances can be tuned by an external magnetic field. In this paper, we experimentally demonstrate this effect for nickel nanoparticles using magnetic circular dichroism (MCD). Besides, we show that non-local surface lattice resonances in periodic arrays of the same nanoparticles significantly enhance the MCD signal. A numerical model based on the modified long wavelength approximation is used to reproduce the main features in the experimental spectra and provide design rules for large MCD effects in sensing applications.

AB - Subwavelength metallic particles support plasmon resonances that allow extreme confinement of light down to the nanoscale. Irradiation with left- and right hand circularly polarized light results in the excitation of circular plasmon modes with opposite helicity. The Lorenz force lifts the degeneracy of the two modes in magnetic nanoparticles. Consequently, the confinement and frequency of localized surface plasmon resonances can be tuned by an external magnetic field. In this paper, we experimentally demonstrate this effect for nickel nanoparticles using magnetic circular dichroism (MCD). Besides, we show that non-local surface lattice resonances in periodic arrays of the same nanoparticles significantly enhance the MCD signal. A numerical model based on the modified long wavelength approximation is used to reproduce the main features in the experimental spectra and provide design rules for large MCD effects in sensing applications.

UR - http://www.scopus.com/inward/record.url?scp=84962234585&partnerID=8YFLogxK

U2 - 10.1364/OE.24.003562

DO - 10.1364/OE.24.003562

M3 - Article

VL - 24

SP - 3562

EP - 3571

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 4

ER -

ID: 2499796