Cluster effects in high-order harmonics generated by ultrashort light pulses

Vozzi, C.; Nisoli, M.; Caumes, J-P.; Sansone, G.; Stagira, S.; De Silvestri, S.; Vecchiocattivi, M.; Bassi, D.; Pascolini, M.; Poletto, L.; Villoresi, P.; Tondello, G.
March 2005
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p111121
Academic Journal
High-order harmonic generation in argon driven by 25-fs-light pulses is investigated from the gaseous to the cluster regime. The harmonic cutoff observed in presence of clusters shows a considerable extension with respect to the gaseous phase. Harmonic spectra are investigated as a function of cluster size, showing the existence of an optimal cluster dimension, which maximizes the harmonic photon yield.


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