Strong coupling of excitons in patterned few-layer WS₂ with guided mode and bound state in the continuum

Abstract

The strong coupling of excitons in few-layer transition-metal dichalcogenide (TMDC) with guided mode resonance (GMR) and bound state in the continuum (BIC) is investigated. It is shown that the strong...

Optical bound states in the continuum in periodic structures: mechanisms, effects, and applications

“…11(b)], paving the way to topologically protected polariton devices. Besides using the TMDC monolayer over or inside the periodic structures [151–156] , fabricating bulk TMDC materials to form metasurfaces can efficiently improve the spatial overlap of the cavity mode profile with the emitters to make more significant strength of light–matter interaction. While several theoretical bulk WS2 works give large Rabi splitting that even exceeds 200 meV [157–161] , recent experiments show a tuned strong coupling system with maximum Rabi splitting of 116 meV by constructing BIC-driven metasurfaces composed of bulk WS2 [162] .…”