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Valer Tosa National Institute R&D Isotopic Molecular Technologies, Cluj-Napoca, Romania

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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Valer Tosa National Institute R&D Isotopic Molecular Technologies, Cluj-Napoca, Romania

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  1. 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

  2. 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

  3. Tools A B C

  4. M G PA M OUTPUT BS HWP INPUT Scheme of Principle [for details see C. Altucci et al, Opt. Lett. 33, 2943 (2008) ]

  5. 1D mechanism of SAP formation (1)

  6. 1D mechanism of SAP formation

  7. Trajectory analysis (on-axis) Trajectory phase: V. Tosa et al. PRA 79, 043828 (2009)

  8. 3D SAP formation

  9. SAP selection

  10. Explore the limits of the method

  11. Explore the limits of the method (2) Intensity variation

  12. Explore the limits of the method (4)

  13. Explore the limits of the method (3) Using a truncated gaussian

  14. Method efficiency Case calculated using the polarization gate and conditions specified in L. J. Sola, et al. Nat. Phys. 2, 319 (2006)

  15. 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

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