Macroscopic Effects in Single Attosecond Pulse Generation Valer
- Slides: 16
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 UDIM 09, Ischia island, Naples, Italy 1
UDIM 09, Ischia island, Naples, Italy 2
Layout 1. Tools for numerical modeling of SAP 2. A proposed sheme to obtain a single attosecond pulse (SAP) 3. The mechanism of SAP formation 4. Analysis of scheme feasibility 5. Conclusions UDIM 09, Ischia island, Naples, Italy 3
Tools A B C UDIM 09, Ischia island, Naples, Italy 4
Scheme of Principle [for details see C. Altucci et al, Opt. Lett. 33, 2943 (2008) ] M M PA G HWP BS OUTPUT INPUT UDIM 09, Ischia island, Naples, Italy 5
1 D mechanism of SAP formation (1) UDIM 09, Ischia island, Naples, Italy 6
1 D mechanism of SAP formation UDIM 09, Ischia island, Naples, Italy 7
Trajectory analysis (on-axis) Trajectory phase: UDIM 09, Ischia island, Naples, Italy V. Tosa et al. PRA 79, 043828 (2009) 8
3 D SAP formation UDIM 09, Ischia island, Naples, Italy 9
SAP selection UDIM 09, Ischia island, Naples, Italy 10
Explore the limits of the method UDIM 09, Ischia island, Naples, Italy 11
Explore the limits of the method (2) Intensity variation UDIM 09, Ischia island, Naples, Italy 12
Explore the limits of the method (4) UDIM 09, Ischia island, Naples, Italy 13
Explore the limits of the method (3) Using a truncated gaussian UDIM 09, Ischia island, Naples, Italy 14
Method efficiency Case calculated using the polarization gate and conditions specified in L. J. Sola, et al. Nat. Phys. 2, 319 (2006) UDIM 09, Ischia island, Naples, Italy 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 UDIM 09, Ischia island, Naples, Italy 16
