Suppression and amplification of phonon sidebands in transition metal dichalcogenides by optical feedback
arxiv(2023)
摘要
Transition metal dichalcogenides (TMDCs) combine both strong
light-matter-interaction and strong Coulomb-interaction for the formation of
optically excitable excitons. Through radiative feedback control, a mechanism
to control the linewidth can be applied, which modifies optical transition
spectra. Here, we extend these investigations to the absorption spectra of
TMDCs in a variety of geometries with respect to non-Markovian
exciton-phonon-scattering contributions. Our approach is based on the self
consistent solution of the microscopic Bloch equations and the macroscopic
solution of the wave equation. We discuss the formation of a phonon sideband
for MoSe_2 embedded in SiO_2, and two setups for enhancing or suppressing
the phonon sideband in the spectrum.
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关键词
phonon sidebands,transition metal
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