Observation of a Train of Attosecond Pulses from High Harmonic Generation

P. M. Paul 1 E. S. Toma 2 P. Breger 1 Genevive Mullot 3 Frederika Auge-Rochereau 3 Philippe Balcou 3 H. G. Muller 2 P. Agostini 1
1 Centre d'Etudes de Saclay
2 AMOLF - FOM Institute for Atomic and Molecular Physics
3 LOA - Laboratoire d'optique appliquée
Abstract : In principle, the temporal beating of superposed high harmonics obtained by focusing a femtosecond laser pulse in a gas jet can produce a train of very short intensity spikes, depending on the relative phases of the harmonics. We present a method to measure such phases through two-photon, two-color photoionization. We found that the harmonics are locked in phase and form a train of 250-attosecond pulses in the time domain. Harmonic generation may be a promising source for attosecond time-resolved measurements.
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Submitted on : Tuesday, October 5, 2010 - 2:13:16 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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P. M. Paul, E. S. Toma, P. Breger, Genevive Mullot, Frederika Auge-Rochereau, et al.. Observation of a Train of Attosecond Pulses from High Harmonic Generation. Science, American Association for the Advancement of Science, 2001, 292 (5522), pp.1689 - 1692. ⟨10.1126/science.1059413⟩. ⟨hal-00523494⟩

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