Fig. 5: 2M peak position and linewidth as a function of time for the fluence of 625 mJ cm−2.

a 2M peak position; The solid line is a fit to a single exponential function with the decay constant of 589 ± 44 fs. Inset shows peak position shift from t = −1000 fs to t = 300 fs as a function of fluence; b 2M peak width. The fit is to a biexponential function with a fast decay of 1003 ± 134 fs and slow decay of about 30 ps. The skewness shown in the inset (see Supplementary Note 2 for definition) exhibits similar time dependence to the peak width. Error bars for all quantities are 95% confidence intervals calculated from the fitting procedure described in the Supplementary Note 2.