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2D semiconductor nonlinear plasmonic modulators.

ABSTRACT: A plasmonic modulator is a device that controls the amplitude or phase of propagating plasmons. In a pure plasmonic modulator, the presence or absence of a plasmonic pump wave controls the amplitude of a plasmonic probe wave through a channel. This control has to be mediated by an interaction between disparate plasmonic waves, typically requiring the integration of a nonlinear material. In this work, we demonstrate a 2D semiconductor nonlinear plasmonic modulator based on a WSe₂ monolayer integrated on top of a lithographically defined metallic waveguide. We utilize the strong interaction between the surface plasmon polaritons (SPPs) and excitons in the WSe₂ to give a 73 % change in transmission through the device. We demonstrate control of the propagating SPPs using both optical and SPP pumps, realizing a 2D semiconductor nonlinear plasmonic modulator, with an ultrafast response time of 290?fs.

SUBMITTER: Klein M

PROVIDER: S-EPMC6646399 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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2D semiconductor nonlinear plasmonic modulators.

Klein Matthew M Badada Bekele H BH Binder Rolf R Alfrey Adam A McKie Max M Koehler Michael R MR Mandrus David G DG Taniguchi Takashi T Watanabe Kenji K LeRoy Brian J BJ Schaibley John R JR

Nature communications 20190722 1

A plasmonic modulator is a device that controls the amplitude or phase of propagating plasmons. In a pure plasmonic modulator, the presence or absence of a plasmonic pump wave controls the amplitude of a plasmonic probe wave through a channel. This control has to be mediated by an interaction between disparate plasmonic waves, typically requiring the integration of a nonlinear material. In this work, we demonstrate a 2D semiconductor nonlinear plasmonic modulator based on a WSe<sub>2</sub> monol ...[more]

PMID: 31332203

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