2019/02/12 by Matthew Klein, Bekele H. Badada, Rolf Binder +8
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Exciton #Nonlinear optics #Nonlinear system #Plasmon #Plasmonic and Surface Plasmon Research #Polariton #Semiconductor #Strong Light-Matter Interactions #Surface plasmon #Surface plasmon polariton #Ultrashort pulse #cond-mat.mes-hall #physics.app-ph
paper · pdf · doi:10.1038/s41467-019-11186-w
arxiv created 2019/02/12 · openalex publication_date 2019/07/22 · openalex created_date 2019/08/13 · arxiv updated 2019/09/11 · openalex updated_date 2026/08/06
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 WSe 2 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 WSe 2 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.