Nonlinear optical response of a symmetrical Au dithiolene complex under ps and ns laser excitation in the infrared and in the visible

► NLO properties of Au dithiolenes. ► Transient and electronic NLO response of [Au(dpedt)2]. ► Third-order susceptibility and second hyperpolarizability of [Au(dpedt)2]. ► Dithiolene complexes. ► Au-dithiolene complexes.