Many-body effects for excitonic high-order wave mixing in monolayer transition metal dichalcogenides
2020
The authors reveal that the high-order wave mixing processes via resonant generation of tightly bound excitons in a two-color strong laser field are significantly enhanced due to many-body Coulomb interaction, which reshapes the radiation spectra. This finding shows that monolayer transition metal dichalcogenides can serve as an efficient medium for high harmonic generation, and the harmonic spectra are capable to uncover the many-body dynamics in a femtosecond timescale
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