Sansone G, Vozzi C, Stagira S, Pascolini M, Poletto L, Villoresi P, Tondello G, De Silvestri S, Nisoli M
National Laboratory for Ultrafast and Ultraintense Optical Science--INFM, Dipartimento di Fisica, Politecnico, Milano, Italy.
Phys Rev Lett. 2004 Mar 19;92(11):113904. doi: 10.1103/PhysRevLett.92.113904. Epub 2004 Mar 18.
So far the role of the carrier-envelope phase of a light pulse has been clearly experimentally evidenced only in the sub-6-fs temporal regime. Here we show, both experimentally and theoretically, the influence of the carrier-envelope phase of a multi-optical-cycle light pulse on high-order harmonic generation. For the first time, we demonstrate that the short and long electron quantum paths contributing to harmonic generation are influenced in a different way by the pulse carrier-envelope phase.