Anne L’Huillier

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M. Bellini,1,2 C. Lyngå,3 A. Tozzi,4 M. B. Gaarde,3,5 T. W. Hänsch,2,4,6 A. L’Huillier,3 and C.-G. Wahlström3 1European Laboratory for Non Linear Spectroscopy (L.E.N.S.), Largo E. Fermi, 2, I-50125 Florence, Italy 2Istituto Nazionale di Fisica della Materia, INFM, Florence, Italy 3Department of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00(More)
We present a systematic study of the angular distributions of high-order harmonics generated with a femtosecond Cr:LiSrAlF6 laser. We investigate the influence of different parameters, namely laser intensity, nonlinear order, nature of the gas and position of the laser focus relative to the generating medium. We show that when the laser is focused before(More)
K. Klünder,1 P. Johnsson,1 M. Swoboda,2 A. L’Huillier,1 G. Sansone,3 M. Nisoli,3 M. J. J. Vrakking,4 K. J. Schafer,5 and J. Mauritsson1,* 1Department of Physics, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden 2TU Dresden, B CUBE–Center for Molecular Bioengineering, Arnoldstrasse 18, D-01307 Dresden, Germany 3Politecnico di Milano, Department of(More)
The local enhancement of few-cycle laser pulses by plasmonic nanostructures opens up for spatiotemporal control of optical interactions on a nanometer and few-femtosecond scale. However, spatially resolved characterization of few-cycle plasmon dynamics poses a major challenge due to the extreme length and time scales involved. In this Letter, we(More)
This tutorial presents an introduction to power scaling concepts for high-order harmonic generation (HHG) and attosecond pulse production. We present an overview of state-of-the-art HHG-based extreme ultraviolet (XUV) sources, followed by a brief introduction to basic principles underlying HHG and a detailed discussion of macroscopic effects and scaling(More)
Autoionization, which results from the interference between direct photoionization and photoexcitation to a discrete state decaying to the continuum by configuration interaction, is a well known example of the important role of electron correlation in light-matter interaction. Information on this process can be obtained by studying the spectral, or(More)
Xe2+ ions can easily be formed by multiphoton absorption in Xe atoms at 0.53 03BCm. At low laser intensities, a laser-Xe atom interaction takes place which generates Xe2+ ions through a 15-photon absorption from Xe atoms. At higher intensities, a laser-Xe+ ion interaction takes place, generating Xe2+ ions through a 10-photon absorption from the Xe+ ion in(More)
In a recent Letter [Phys. Rev. Lett. 106, 143002 (2011)] Klünder et al reported their measurement of the time delay difference between electrons photoionized from the 3s2 and 3p6 shells in argon in the photon energy range from 32 to 42 eV. These measurements, involving two-photon ionization processes, were compared with Wigner time delays obtained from(More)
The sub-cycle dynamics of electrons driven by strong laser fields is central to the emerging field of attosecond science. We demonstrate how the dynamics can be probed through high-order harmonic generation, where different trajectories leading to the same harmonic order are initiated at different times, thereby probing different field strengths. We find(More)
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