Issue 39, 2021

Selecting two-photon sequential ionization pathways in H2 through harmonic filtering

Abstract

Recent experiments in gas-phase molecules have shown the versatility of using attosecond pulse trains combined with IR femtosecond pulses to track and control excitation and ionization yields on the attosecond timescale. The interplay between electron and nuclear motions drives the light-induced transitions favoring specific reaction paths, so that the time delay between the pulses can be used as the tracking parameter or as a control knob to manipulate the molecular dynamics. Here, we present ab initio simulations on the hydrogen molecule to demonstrate that by filtering the high harmonics in an attosecond pulse train one can quench or enhance specific quantum paths thus dictating the outcome of the reaction. It is then possible to discriminate the dominant sequential processes in two-photon ionization, as for example molecular excitation followed by ionization or the other way around. More interestingly, frequency filters can be employed to steer the one- and two-photon yields to favor electron emission in a specific direction.

Graphical abstract: Selecting two-photon sequential ionization pathways in H2 through harmonic filtering

Article information

Article type
Paper
Submitted
27 Jul 2021
Accepted
27 Sep 2021
First published
27 Sep 2021

Phys. Chem. Chem. Phys., 2021,23, 22395-22403

Selecting two-photon sequential ionization pathways in H2 through harmonic filtering

A. Sopena, H. Bachau, F. Catoire, F. Martín and A. Palacios, Phys. Chem. Chem. Phys., 2021, 23, 22395 DOI: 10.1039/D1CP03449A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements