Directional Emission from Tungsten Disulfide Monolayer Coupled to Plasmonic Nanowire‐on‐Mirror Cavity
Abstract
Influencing spectral and directional features of exciton emission characteristics from 2D transition metal dichalcogenides by coupling it to plasmonic nanocavities has emerged as an important prospect in nanophotonics of 2D materials. Herein, the directional photoluminescence emission from a tungsten disulfide (WS2) monolayer sandwiched between a single‐crystalline plasmonic silver nanowire (AgNW) waveguide and a gold (Au) mirror is experimentally studied, thus forming a AgNW–WS2–Au cavity. Using polarization‐resolved Fourier‐plane optical microscopy, the directional emission characteristics from the distal end of the AgNW–WS2–Au cavity are quantified. Given that the geometry simultaneously facilitates local field enhancement and waveguiding capability, its utility in 2D material‐based, on‐chip nanophotonic signal processing is envisaged, including nonlinear and quantum optical regimes.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 06, 2021
- Source ID
- 10.1002/adpr.202100002
Entities
People
- Atikur Rahman
- Diptabrata Paul
- G V Pavan Kumar
- Gokul M. A.
- Shailendra K Chaubey
- Sunny Tiwari
Organizations
- Air Force Research Laboratory
- Indian Institutes of Science Education and Research