Tunable double Rabi splitting in hybrid plasmonic-J-aggregates-WS2 nanocavity

Junyu Li; Yuwei Lu; Xuehua Wang

doi:10.1117/12.2600760

9 October 2021 Tunable double Rabi splitting in hybrid plasmonic-J-aggregates-WS₂ nanocavity

Junyu Li, Yuwei Lu, Xuehua Wang

Proceedings Volume 11904, Plasmonics VI; 1190411 (2021) https://doi.org/10.1117/12.2600760
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

The strong interaction between several components forms the hybridized plexciton state and yields multiple Rabi splittings. We propose an integrated structure, J-aggregates molecular dye and monolayer WS₂ wrap around the core-shell Au@Ag nanorods layer by layer, and realize an active-controlled strong exciton-plasmon-exciton coupling, resulting in three plexciton branches. We build a coupled oscillator model theory to describe the interaction, finely reproduce the derived scattering spectra by the finite-difference time-domain (FDTD) method. The amount of J-aggregates and the layer of WS₂ can actively modulate the coupling strength between excitons and the localized surface plasmon resonances. The core-multishell structure is experiment-feasible for the unusual WS₂ nutshell riches in defects state and protects J-aggregates from dye leakage and photobleaching. The multiple Rabi splittings and its dynamic control may have potential application in sensing and catalysis at the nanoscale.

Citation Download Citation

Junyu Li, Yuwei Lu, and Xuehua Wang "Tunable double Rabi splitting in hybrid plasmonic-J-aggregates-WS₂ nanocavity", Proc. SPIE 11904, Plasmonics VI, 1190411 (9 October 2021); https://doi.org/10.1117/12.2600760

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