Orientation-dependent interaction between gold nanocups and WS2 monolayer

Xinyue XIA; Ruoqi AI; Jianfang Wang

doi:10.1117/12.2676329

5 October 2023 Orientation-dependent interaction between gold nanocups and WS₂ monolayer

Xinyue XIA, Ruoqi AI, Jianfang Wang

Proceedings Volume PC12654, Enhanced Spectroscopies and Nanoimaging 2023; PC1265412 (2023) https://doi.org/10.1117/12.2676329
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Conference Poster

Abstract

Strong coupling is essential for the investigations like thresholdless lasing, single-photon switching and quantum emitter. However, Light–matter interaction is hard to realize in the free space due to the unmatching between the light wavelength and the emitter. Herein, a strong coupling between the magnetic plasmons and excitons is investigated on (Au nanocup)-on-(WSe2 monolayer/multilayer) hybrid structures. The asymmetric morphology of Au nanocups allows both electric and magnetic plasmon resonances on the individual particles. By varying the opening of Au nanocups from sideward and upward to downward orientations, resonance coupling from weak to strong is achieved, accompanied by a large split mode shown up in the dark-field scattering spectrum. The detuning between the magnetic plasmons and the excitons in the WS2 monolayer was modulated by varying the size of downward-orientated Au nanocups. A Rabi splitting up to 106 meV was realized at the zero detuning.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinyue XIA, Ruoqi AI, and Jianfang Wang "Orientation-dependent interaction between gold nanocups and WS₂ monolayer", Proc. SPIE PC12654, Enhanced Spectroscopies and Nanoimaging 2023, PC1265412 (5 October 2023); https://doi.org/10.1117/12.2676329

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