Plasmonic channel waveguides in random arrays of metallic nanoparticles

Bidragets oversatte titel: Plasmoniske kanal bølgeledere i tilfældige mønstre af metal nanopartikler

Eduardo Pisano, Victor Coello, César Eduardo García Ortíz, Yiting Chen, Jonas Beermann, Sergey I. Bozhevolnyi

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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Resumé

We report detailed characterization of surface plasmon-polariton guiding along 1-, 1.5- and 2-μm-wide channels in high-density (~75 μm−2) random arrays of gold 70-nm-high and 50-nm-wide nanoparticles fabricated on a 70-nm-thin gold film supported by a 170-μm-thick silica substrate. The mode propagation losses, effective index dispersion, and scattering parameters are characterized using leakage-radiation microscopy, in direct and Fourier planes, in the wavelength range of 740–840 nm. It is found that the mode supported by 2-μm-wide channels propagates over > 10 μm in straight waveguides, with the corresponding S-bends and Y-splitters functioning reasonably well. The results show that the SPP waves can efficiently be guided by narrow scattering-free channels cut through randomly corrugated surface regions. The potential of this waveguiding mechanism is yet to be fully explored by tuning the scattering mean-free path and localization length via the density and size of random nanoparticles. Nevertheless, the results obtained are encouraging and promising diverse applications of these waveguide components in plasmonic circuitry.
OriginalsprogEngelsk
TidsskriftOptics Express
Vol/bind24
Udgave nummer15
Sider (fra-til)17080-17089
ISSN1094-4087
DOI
StatusUdgivet - 2016

Fingeraftryk

waveguides
nanoparticles
scattering
gold
propagation modes
mean free path
polaritons
leakage
tuning
silicon dioxide
microscopy
radiation
wavelengths

Citer dette

Pisano, Eduardo ; Coello, Victor ; García Ortíz, César Eduardo ; Chen, Yiting ; Beermann, Jonas ; Bozhevolnyi, Sergey I. / Plasmonic channel waveguides in random arrays of metallic nanoparticles. I: Optics Express. 2016 ; Bind 24, Nr. 15. s. 17080-17089.
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abstract = "We report detailed characterization of surface plasmon-polariton guiding along 1-, 1.5- and 2-μm-wide channels in high-density (~75 μm−2) random arrays of gold 70-nm-high and 50-nm-wide nanoparticles fabricated on a 70-nm-thin gold film supported by a 170-μm-thick silica substrate. The mode propagation losses, effective index dispersion, and scattering parameters are characterized using leakage-radiation microscopy, in direct and Fourier planes, in the wavelength range of 740–840 nm. It is found that the mode supported by 2-μm-wide channels propagates over > 10 μm in straight waveguides, with the corresponding S-bends and Y-splitters functioning reasonably well. The results show that the SPP waves can efficiently be guided by narrow scattering-free channels cut through randomly corrugated surface regions. The potential of this waveguiding mechanism is yet to be fully explored by tuning the scattering mean-free path and localization length via the density and size of random nanoparticles. Nevertheless, the results obtained are encouraging and promising diverse applications of these waveguide components in plasmonic circuitry.",
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Plasmonic channel waveguides in random arrays of metallic nanoparticles. / Pisano, Eduardo; Coello, Victor; García Ortíz, César Eduardo; Chen, Yiting; Beermann, Jonas; Bozhevolnyi, Sergey I.

I: Optics Express, Bind 24, Nr. 15, 2016, s. 17080-17089.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Plasmonic channel waveguides in random arrays of metallic nanoparticles

AU - Pisano, Eduardo

AU - Coello, Victor

AU - García Ortíz, César Eduardo

AU - Chen, Yiting

AU - Beermann, Jonas

AU - Bozhevolnyi, Sergey I.

PY - 2016

Y1 - 2016

N2 - We report detailed characterization of surface plasmon-polariton guiding along 1-, 1.5- and 2-μm-wide channels in high-density (~75 μm−2) random arrays of gold 70-nm-high and 50-nm-wide nanoparticles fabricated on a 70-nm-thin gold film supported by a 170-μm-thick silica substrate. The mode propagation losses, effective index dispersion, and scattering parameters are characterized using leakage-radiation microscopy, in direct and Fourier planes, in the wavelength range of 740–840 nm. It is found that the mode supported by 2-μm-wide channels propagates over > 10 μm in straight waveguides, with the corresponding S-bends and Y-splitters functioning reasonably well. The results show that the SPP waves can efficiently be guided by narrow scattering-free channels cut through randomly corrugated surface regions. The potential of this waveguiding mechanism is yet to be fully explored by tuning the scattering mean-free path and localization length via the density and size of random nanoparticles. Nevertheless, the results obtained are encouraging and promising diverse applications of these waveguide components in plasmonic circuitry.

AB - We report detailed characterization of surface plasmon-polariton guiding along 1-, 1.5- and 2-μm-wide channels in high-density (~75 μm−2) random arrays of gold 70-nm-high and 50-nm-wide nanoparticles fabricated on a 70-nm-thin gold film supported by a 170-μm-thick silica substrate. The mode propagation losses, effective index dispersion, and scattering parameters are characterized using leakage-radiation microscopy, in direct and Fourier planes, in the wavelength range of 740–840 nm. It is found that the mode supported by 2-μm-wide channels propagates over > 10 μm in straight waveguides, with the corresponding S-bends and Y-splitters functioning reasonably well. The results show that the SPP waves can efficiently be guided by narrow scattering-free channels cut through randomly corrugated surface regions. The potential of this waveguiding mechanism is yet to be fully explored by tuning the scattering mean-free path and localization length via the density and size of random nanoparticles. Nevertheless, the results obtained are encouraging and promising diverse applications of these waveguide components in plasmonic circuitry.

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DO - 10.1364/OE.24.017080

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SN - 1094-4087

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