Figure 4
From: Continuously-tunable light–matter coupling in optical microcavities with 2D semiconductors
Impact of a changed cavity length on an open planar microcavity with a 178.2 nm thick PMMA spacer layer on one mirror (structure depicted in Fig. 1b). The second cavity mode corresponds from left to right to an air gap of 360.8 nm, 425.6 nm and 575.7 nm, respectively. The upper row shows the simulated field distribution of a cavity at resonance (Ecav (ϑres) − Eex = 0), which is marked in the angle-resolved reflectivity spectra below by a dotted vertical line, with neglected absorption of WS2, while the horizontal dashed line indicates the exciton’s emission energy. The exciton’s spectral position is determined by the peak position within the imaginary refractive index. The influence of the first three cavity modes could be found in the Supporting Information (Figs. SI. 4 and 5). Further, the corresponding transmission and absorption spectra as well as the spectra for p-polarized light are displayed within the Supplement (Figs. SI. 8 and 9).
