Abstract

We report the direct observation of a train of attosecond pulses by mean of autocorrelation method using nonresonant two photon processes in atoms and molecules in the xuv region. By analyzing the photoelectron spectra produced by two-photon above-threshold ionization in Ar, the chirp in the attosecond pulse train on the top of the pulse duration of 450 atttoseconds was determined. We also succeeded in observing interferometric fringes on the autocorrelation trace and reconstructed the electric field inside of attosecond pulses with ion signals produced by molecular Coulomb explosion.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.