title: Direct observation of strong light-exciton coupling in thin WS2flakes.
abstract: The strong coupling between excitons and Fabry-Pérot (F-P) cavity modes in tungsten sulfide (WS2) thin layers was studied. By using home-made micro-reflectance spectroscopic technique, we observed the anti-crossing behavior between cavity mode and excitons with flake's thickness dependence. Giant Rabi splitting of ~270 meV for A exciton and ~780 meV for B exciton were obtained from the fitting of the cavity polariton dispersions by use of the coupled oscillators model.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.forename: Liaoxin
authors.initials: L
authors.lastname: Sun
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Changqing
authors.initials: C
authors.lastname: Chen
authors.forename: Xuechu
authors.initials: X
authors.lastname: Shen
authors.forename: Wei
authors.initials: W
authors.lastname: Lu