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Phys. Rev. A 80, 063837 (2009) [8 pages]

Shaping of attosecond pulses by phase-stabilized polarization gating

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G. Sansone*, E. Benedetti, J. P. Caumes, S. Stagira, C. Vozzi, and M. Nisoli
National Laboratory for Ultrafast and Ultraintense Optical Science–CNR-INFM, Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

L. Poletto and P. Villoresi
CNR-INFM, Laboratory of Ultraviolet and X-ray Optical Research, Department of Information Engineering, University of Padova, Padova, Italy

V. Strelkov
General Physics Institute, Russian Academy of Sciences, 38 Vavilova Street, Moscow 119991, Russia

I. Sola, L. B. Elouga, A. Zaïr, E. Mével, and E. Constant
Centre Lasers Intenses et Applications, Université Bordeaux I, Talence Cedex, France

Received 31 January 2008; revised 7 October 2009; published 23 December 2009

See accompanying Physics Synopsis

We demonstrate that the characteristics of the high-order harmonic spectra generated by few-cycle carrier-envelope phase-stabilized pulses can be finely adjusted by controlling the time-dependent ellipticity. The experimental measurements show evidence for the generation of single, pairs, and trains of attosecond pulses by controlling the time window of linear polarization of the driving pulses. The influence of the carrier-envelope phase on the generation process in different confinement configurations is interpreted and analyzed using a nonadiabatic stationary phase model. We show that the xuv emission depends critically on particular aspects of the fundamental electric field that allows us to steer the electron trajectories on the time scale of tens of attoseconds.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.063837
DOI:
10.1103/PhysRevA.80.063837
PACS:
42.65.Ky, 42.65.Re, 42.50.Hz

*giuseppe.sansone@polimi.it