Abstract
The photofragmentation of Cu3 and Al4 clusters during charge reversal with white-light pulses is optimized by using an evolutionary algorithm and a pulse shaping setup. By controlling the spectral phase over the full spectral range of the supercontinuum, tailored pulses are generated with the aim of adapting the energetic and temporal structure of the pulse to the characteristic dynamics and electronic manifold of the investigated systems. In this context, maximizing the ratio of the cationic yield of a selected fragment (Cu2+ and Al+) and the parent ion is chosen as an optimization target. Significant enhancement factors are achieved, demonstrating a high selectivity in populating specific points on the potential energy surface, which facilitates the targeted photofragmentation of the investigated systems. The optimal pulse shapes indicate that both vibronic as well as electronic wave packets are probed. Additional laser-induced dissociation experiments suggest that fragmentation of the Cu3 clusters occu...
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