Nonlinear nanofocusing in tapered plasmonic waveguides

Arthur R. Davoyan; Ilya V. Shadrivov; Alexander A. Zharov; Dmitri K. Gramotnev; Yuri S. Kivshar

doi:10.1103/PhysRevLett.105.116804

Nonlinear nanofocusing in tapered plasmonic waveguides

Arthur R. Davoyan, Ilya V. Shadrivov, Alexander A. Zharov, Dmitri K. Gramotnev, Yuri S. Kivshar

Research output: Contribution to journal › Article › peer-review

119 Citations (Scopus)

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.

Original language	English
Article number	116804
Journal	Physical Review Letters
Volume	105
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.105.116804
Publication status	Published - 9 Sept 2010

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10.1103/PhysRevLett.105.116804

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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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AU - Kivshar, Yuri S.

PY - 2010/9/9

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AB - 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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DO - 10.1103/PhysRevLett.105.116804

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Nonlinear nanofocusing in tapered plasmonic waveguides

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