Figure 4. Biexciton broadening at longer delays than 400 fs.

The single- and biexciton absorption change spectra at Δt of 1 ps (a,b), 2 ps (c,d), 10 ps (e,f) and 500 ps (g,h) with two E_pump. (i) Schematic illustration of the PA bleaching dynamics at longer Δt > 2 ps for the 1.66E_x pump (blue line) and for the 3.3E_x pump (orange line). (j) Transient Γ broadening is shown as function of Δt.