Mode-balancing far-field control of light localization in nanoantennas

Abstract : Light localization is controlled at a scale of lambda/10 in the harmonic regime from the far-field domain in a plasmonic nanoantenna.The nanoantenna under study consists of three aligned spheres 50 nm in diameter separated by a distance of 5 nm. By simply tuning the orientation of an incident plane wave, symmetric and antisymmetric mode balancing induces a strong enhancement of the near-field intensity in one nanogap while nullifying the light intensity in the other nanogap. Furthermore, it is demonstrated that the dipolar moment of a plasmonic particle can be fully extinguished when strongly coupled with a dimer of identical nanoparticles.
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Contributor : Nicolas Bonod <>
Submitted on : Sunday, June 27, 2010 - 5:32:25 PM
Last modification on : Monday, March 4, 2019 - 2:04:12 PM

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A. Devilez, B. Stout, N. Bonod. Mode-balancing far-field control of light localization in nanoantennas. Physical Review B : Condensed matter and materials physics, American Physical Society, 2010, 81 (5), pp.245128-245133. ⟨hal-00495476⟩

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