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Macroscopic Effects in Single Attosecond Pulse Generation. Valer Tosa National Institute R&D Isotopic Molecular Technologies, Cluj-Napoca, Romania. Carlo Altucci, Raffaele Velotta Dipartimento di Scienze Fisiche, Università “Federico II”, Napoli, Italy. Layout.
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Macroscopic Effects in Single Attosecond Pulse Generation Valer Tosa National Institute R&D Isotopic Molecular Technologies, Cluj-Napoca, Romania Carlo Altucci, Raffaele Velotta Dipartimento di Scienze Fisiche, Università “Federico II”, Napoli, Italy
Layout • Tools for numerical modeling of SAP • A proposed sheme to obtain a single attosecond pulse (SAP) • The mechanism of SAP formation • Analysis of scheme feasibility • Conclusions
Tools A B C
M G PA M OUTPUT BS HWP INPUT Scheme of Principle [for details see C. Altucci et al, Opt. Lett. 33, 2943 (2008) ]
Trajectory analysis (on-axis) Trajectory phase: V. Tosa et al. PRA 79, 043828 (2009)
Explore the limits of the method (2) Intensity variation
Explore the limits of the method (3) Using a truncated gaussian
Method efficiency Case calculated using the polarization gate and conditions specified in L. J. Sola, et al. Nat. Phys. 2, 319 (2006)
Conclusions • Polarization gate does not always insure a SAP at single dipole level • High brightness SAP can be generated if the interplay among polarization, ionization, and spatial filtering is properly applied • The proposed scheme could produce single attosecond pulse from multicycle lasers