Nonlinear nanofocusing in tapered plasmonic waveguides
Date
2010
Authors
Davoyan, Artur
Shadrivov, Ilya
Zharov, Alexander
Gramotnev, Dmitri
Kivshar, Yuri
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Publisher
American Physical Society
Abstract
We suggest using tapered waveguides for compensating losses of surface plasmon-polaritons in order to enhance nonlinear effects at the nanoscale. We study nonlinear plasmon self-focusing in tapered metal-dielectric-metal slot waveguides and demonstrate that, by an appropriate choice of the taper angle, we can effectively suppress the mode attenuation achieving stable propagation of a spatial plasmon soliton. For larger tapering angles we observe plasmon-beam nanofocusing in both spatial dimensions.
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Keywords
Keywords: Nano scale; Nano-focusing; Nonlinear effect; Self-focusing; Slot waveguide; Spatial dimension; Surface plasmon polaritons; Taper angles; Tapered plasmonic waveguides; Tapered waveguide; Electric losses; Solitons; Waveguides; Plasmons
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Source
Physical Review Letters
Type
Journal article
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2037-12-31
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