Fig. 7: Fs TA spectra and decay kinetics of Ag17, AuAg16, Ag13Cu4 and AuAg12Cu4 clusters.

Fs TA of the NCs at a fluence of 350 μJ cm-2, at a 120 fs duration pump at 400 nm and different pump-probe delay times. The TA spectrum of a Ag17, c AuAg16, e Ag13Cu4, and g AuAg12Cu4. Decay kinetics at selected wavelengths for b Ag17, d AuAg16, f Ag13Cu4, and h AuAg12Cu4.