Figure 1

(a) Time-resolved exciton PL intensity, for increasing excitation powers in the absence of the electron gas, under nonresonant excitation. The curves are normalized to $P_{\mathit{\text{pump}}}$. (b) Decay times as a function of the excitation power extracted from the curves of (a). Inset: time-resolved exciton PL intensity, with the excitation energy at resonance with the exciton line.Reuse & Permissions

Figure 2

(a) Time-integrated PL spectra and (b) time-resolved exciton PL intensity, for increasing He:Ne powers, under nonresonant excitation. (c): Decay times as a function of the He:Ne power extracted from the curves of (b). Inset: time-resolved trion PL intensity, with the excitation energy at resonance with the trion line and the He:Ne power set at $1\mu \mathrm{W}$.Reuse & Permissions

Figure 3

Measured (symbols) and simulated (solid lines) dispersion curve for $\Delta =-8\mathrm{meV}$. The two investigated states ($k=0$ and reservoir) are highlighted with circles. The dashed lines represent the energy of the uncoupled exciton and cavity modes.Reuse & Permissions

Figure 4

PL intensity as a function of time for (a) the reservoir and (b) $k=0$ states for increasing powers of the He:Ne beam. Inset: integrated PL intensities for the reservoir (open circles) and $k=0$ states (black squares) as a function of the He:Ne power.Reuse & Permissions

Figure 5

(a) PL intensity measured as a function of time for $k=0$ (black lines) and in the reservoir (gray lines) for $P_{\mathrm{He}:\mathrm{Ne}}=0$. (b) Decay times for the $k=0$ states (black open circles) and for the reservoir (gray squares) extracted from the decay curves of (a); solid lines correspond to the decay times extracted from the simulated curves of (c). (c) Simulated decay curves corresponding to panel (a). (d) PL intensity measured as a function of time for $k=0$ (black lines) and for the reservoir (gray lines) for $P_{\mathrm{He}:\mathrm{Ne}}=40\mu \mathrm{W}$. (e) Initial decay times for $k=0$ (black open circles) and decay time of the reservoir (gray squares) extracted from the decay curves of (d); solid lines correspond to the decay times extracted from the simulated curves of (f). (f) Simulated decay curves corresponding to panel (d). In panels (a), (c), (d), and (f) the decay curves have been vertically shifted so that the $k=0$ and reservoir maximum intensity coincide at each excitation power. In panels (d) and (f), the dashed line highlights the $k=0$ initial decay for $P_{\mathit{\text{pump}}}=500\mu \mathrm{W}$. Panels (c) and (f) will be discussed in Sec. 5.Reuse & Permissions

Figure 6

Integrated PL intensities of the $k=0$ states as a function of the pump power without electrons (solid squares) and with electrons (open circles). The solid lines are guides to the eye.Reuse & Permissions