Semiclassical analysis of photoelectron interference in a synthesized two-color laser pulse
Abstract
We measure the photoelectron energy spectra from strong-field ionization of Kr in a two-color laser pulse consisting of a strong 400-nm field and a weak 800-nm field. The intensities of the main above-threshold ionization (ATI) and sideband peaks in the photoelectron energy spectra oscillate roughly oppositely with respect to the relative phase between the two-color components. We study the photoelectron interferometry in strong-field ATI regime from the view of interference of different electron trajectories in order to extend RABBITT type analysis to the strong-field regime. Based on the strong-field approximation model, we obtain analytical expressions for the oscillations of both ATI and sideband peaks with the relative phase. A phase shift of \pi/4 with respect to the field maximum of the two-color laser pulse is revealed for the interference maximum in the main ATI peak without including the effect of the atomic potential.
Keywords
Cite
@article{arxiv.1911.04035,
title = {Semiclassical analysis of photoelectron interference in a synthesized two-color laser pulse},
author = {Yudi Feng and Min Li and Siqiang Luo and Kun Liu and Baojie Du and Yueming Zhou and Peixiang Lu},
journal= {arXiv preprint arXiv:1911.04035},
year = {2019}
}
Comments
8 pages, 7 figures