2D semiconductor nonlinear plasmonic modulators

Matthew Klein, Bekele H. Badada, Rolf Binder, Adam Alfrey, Max McKie, Michael R. Koehler, David G. Mandrus, Takashi Taniguchi, Kenji Watanabe, Brian J. LeRoy, John R. Schaibley

Research output: Contribution to journalArticle

11 Scopus citations

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.

Original languageEnglish (US)
Article number3264
JournalNature communications
Volume10
Issue number1
DOIs
StatePublished - Dec 1 2019

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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    Klein, M., Badada, B. H., Binder, R., Alfrey, A., McKie, M., Koehler, M. R., Mandrus, D. G., Taniguchi, T., Watanabe, K., LeRoy, B. J., & Schaibley, J. R. (2019). 2D semiconductor nonlinear plasmonic modulators. Nature communications, 10(1), [3264]. https://doi.org/10.1038/s41467-019-11186-w