Figure 3: Reflectivity scans showing strong coupling for X0 and weak coupling for X−.
From: Exciton–polaritons in van der Waals heterostructures embedded in tunable microcavities
(a) Reflectivity scan of a single-QW area at 4 K showing clear anticrossing with X0. Weak coupling with X− is also apparent where the coupling strength is less than the charged exciton linewidth. (b) Theoretical reproduction of a based on a three-coupled oscillator model with coupling strengths of 18 and 8.2 meV for X0 and X−, respectively. (c) Reflectivity scan of an empty cavity with no active region showing a linear dependence of the cavity mode energy on the piezo voltage.
