Fig. 4: Linewidth and energy of the LP branch vs. probe intensity.
From: Ultrafast dynamic stark shift of an exciton-polariton condensate
a, b Linewidth (a) and energy (b) of the LP branch vs. average probe (injection) intensity at cavity-exciton detuning δ = +5.1 meV. c, d Linewidth and energy at δ = 0. e, f Differential reflectivity profiles at varying pump-probe delay for δ = +5.1 meV and an average probe intensity of (e) 26 mW cm−2, below condensation threshold and (f) 149 mW cm−2, at condensation: measured (red solid lines) and calculated (blue dashed lines). The scale for ΔR/R is fixed for all plots in (e) and (f) respectively. The results for the linewidth and energy in a-d were obtained from the fit of the measured profiles to the model.
