Metasurface Integrated Monolayer Exciton Polariton

• DOI: 10.1021/acs.nanolett.0c01624
• Publication Date: 2020-06-10T17:27:46Z
• Authors: Yueyang Chen; Shengnan Miao; Tianmeng Wang; Ding Zhong; Abhi Saxena; Colin Chow; James Whitehead; Dario Gerace; Xiaodong Xu; Su-Fei Shi; Arka Majumdar
• Keywords: Tungsten diselenide; Nanophotonics

Monolayer transition-metal dichalcogenides (TMDs) are the first truly two-dimensional (2D) semiconductor, providing an excellent platform to investigate light-matter interaction in 2D limit. The inherently strong excitonic response monolayer TMDs can be further enhanced by exploiting temporal confinement of light nanophotonic structures. Here, we demonstrate a exciton-polariton system strongly coupling atomically thin tungsten diselenide (WSe2) silicon nitride (SiN) metasurface. Via energy-momentum spectroscopy WSe2-metasurface system, observed characteristic anticrossing polariton dispersion both reflection and photoluminescence spectrum. A Rabi splitting 18 meV was which matched well with our numerical simulation. Moreover, showed that splitting, dispersion, far-field emission pattern could tailored subwavelength-scale engineering optical meta-atoms. Our thus opens door for future development novel, exotic devices advanced meta-optical engineering.