Non-Sequential Double Ionization by Counter Rotating Circularly Polarized Two-Color Laser Fields
Atomic Physics
2016-09-28 v2
Abstract
We report on non-sequential double ionization of Ar by a laser pulse consisting of two counter rotating circularly polarized fields (390 nm and 780 nm). The double ionization probability depends strongly on the relative intensity of the two fields and shows a "knee"-like structure as function of intensity. We conclude that double ionization is driven by a beam of nearly monoenergetic recolliding electrons, which can be controlled in intensity and energy by the field parameters. The electron momentum distributions show the recolliding electron as well as a second electron which escapes from an intermediate excited state of Ar.
Cite
@article{arxiv.1606.07303,
title = {Non-Sequential Double Ionization by Counter Rotating Circularly Polarized Two-Color Laser Fields},
author = {S. Eckart and M. Richter and M. Kunitski and A. Hartung and J. Rist and K. Henrichs and N. Schlott and H. Kang and T. Bauer and H. Sann and L. Ph. H. Schmidt and M. Schöffler and T. Jahnke and R. Dörner},
journal= {arXiv preprint arXiv:1606.07303},
year = {2016}
}
Comments
6 pages, 3 figures, Phys.Rev.Lett. accepted