| Literature DB >> 11387467 |
P M Paul1, E S Toma, P Breger, G Mullot, F Auge, P Balcou, H G Muller, P Agostini.
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.Year: 2001 PMID: 11387467 DOI: 10.1126/science.1059413
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728