Abstract
Being motivated by recent achievements in the rapidly developing fields of optical bound states in the continuum (BICs) and excitons in monolayers of transition metal dichalcogenides, we analyze strong coupling between BICs in Ta2O5 periodic photonic structures and excitons in WSe2 monolayers. We demonstrate that giant radiative lifetime of BICs allow to engineer the exciton-polariton lifetime enhancing it three orders of magnitude compared to a bare exciton.
Highlights
Monolayers of transition metal dichalcogenides (TMDCs) are a certain class of post-graphene two-dimensional materials [1], attracting vast research interest in recent years
Strong coupling of TMDC excitons to light has been observed in the structures resembling the conventional microcavities, where the monolayer was sandwiched between two Bragg mirrors [4]
Since fabrication of high quality TMDC monolayers is based on the mechanical exfoliation techniques, it is quite technologically demanding
Summary
Monolayers of transition metal dichalcogenides (TMDCs) are a certain class of post-graphene two-dimensional materials [1], attracting vast research interest in recent years. Being motivated by recent achievements in the rapidly developing fields of optical bound states in the continuum (BICs) and excitons in monolayers of transition metal dichalcogenides, we analyze strong coupling between BICs in Ta2O5 periodic photonic structures and excitons in WSe2 monolayers. We demonstrate that giant radiative lifetime of BICs allow to engineer the exciton-polariton lifetime enhancing it three orders of magnitude compared to a bare exciton.
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