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

SUBMITTER: Klein M 

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

REPOSITORIES: biostudies-literature