1. Directional emission from WS2 monolayer coupled to plasmonic Nanowire-on-Mirror Cavity
- Author
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Chaubey, Shailendra K., A., Gokul M., Paul, Diptabrata, Tiwari, Sunny, Rahman, Atikur, and Kumar, G. V. Pavan
- Subjects
Condensed Matter::Materials Science ,Condensed Matter - Mesoscale and Nanoscale Physics ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,Soft Condensed Matter (cond-mat.soft) ,FOS: Physical sciences ,Physics::Optics ,Applied Physics (physics.app-ph) ,Physics - Applied Physics ,Condensed Matter - Soft Condensed Matter ,Optics (physics.optics) ,Physics - Optics - Abstract
Influencing spectral and directional features of exciton emission characteristics from 2D transition metal dichalcogenides by coupling it to plasmonic nano-cavities has emerged as an important prospect in nanophotonics of 2D materials. In this paper we experimentally study the directional photoluminescence emission from Tungsten disulfide (WS2) monolayer sandwiched between a single-crystalline plasmonic silver nanowire (AgNW) waveguide and a gold (Au) mirror, thus forming an AgNW-WS2-Au cavity. By employing polarization-resolved Fourier plane optical microscopy, we quantify the directional emission characteristics from the distal end of the AgNW-WS2-Au cavity. Given that our geometry simultaneously facilitates local field enhancement and waveguiding capability, we envisage its utility in 2D material-based, on-chip nanophotonic signal processing, including nonlinear and quantum optical regimes., To appear in Advanced Photonics Research (2021)
- Published
- 2021