Temporal characterization of long quantum-path high harmonics
Abstract
We measure for the first time the duration of long-quantum path EUV high harmonics produced in xenon gas. The long-quantum path contribution to the high-harmonic signal was carefully controlled by employing a two-colour driving laser field and a high-harmonic spatial selection in the far field, over a range of in photon energy. To characterise the temporal profile of long quantum path high harmonics, we performed a second order volume autocorrelation () via two EUV photon double ionization in argon. Our results show the production and characterisation of a train of EUV pulses from the long-path with pulse duration as short as . This measurement demonstrates that the long-quantum path emission can have enough flux for performing non-linear EUV experiments, and that the long trajectories enable a pulse duration short enough to support measurements with a temporal resolution below .
Keywords
Cite
@article{arxiv.2106.11259,
title = {Temporal characterization of long quantum-path high harmonics},
author = {A. Carpeggiani and B. Bodi and E. S. Skantzakis and J. W. G. Tisch and J. P. Marangos and D. Charalambidis and P. Tzallas and A. Zair},
journal= {arXiv preprint arXiv:2106.11259},
year = {2021}
}