Broadband scattering by tapered nanoantennas
We realize a new design of tapered Yagi-Uda nanoantennas and experimentally study their far-field light scattering. We show that in comparison with untapered structures the tapered nanoantennas exhibit broadband resonances featuring a distinct line shape. Our observations are supported by numerical calculations, which further reveal the tapered nanoantenna's wavelength-dependent optical near-field confinement.
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|Source:||Physica Status Solidi: Rapid Research Letters|
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