Strong Exciton-Coherent Phonon Coupling In Single-Layer MoS2

We use broadband optical pump-probe spectroscopy to study coherent optical phonons in lL-MoS2. We detect a strong coupling with the A’: mode, which is enhanced around the C-exciton peak. Ab-initio calculations of the phonon-induced band structure variation fully confirm this result. © 2019 The Author(s)