High-order harmonic generation triggered by elliptically polarized laser pulses

Projektinformationen

EPHHG

ID Finanzhilfevereinbarung: 101154681

DOI

10.3030/101154681

Das Projekt endete am 7 Mai 2025

EK-Unterschriftsdatum 2 Mai 2024

Startdatum 1 Juni 2024

Enddatum 31 Mai 2026

Finanziert unter

• Marie Skłodowska-Curie Actions (MSCA)

Gesamtkosten

Keine Daten

EU-Beitrag

€ 195 914,88

Koordiniert durch

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France

Periodic Reporting for period 1 - EPHHG (High-order harmonic generation triggered by elliptically polarized laser pulses)

Berichtszeitraum: 2024-06-01 bis 2026-05-31

Zusammenfassung vom Kontext und den Gesamtzielen des Projekts

High-order harmonic generation (HHG) is a highly nonlinear phenomenon arising from the propagation of a laser pulse throughout a medium. HHG is used to generate tabletop sources of attosecond light pulses, essential for probing ultrafast phenomena in matter at the natural scales of the electrons. The shape of the generated light pulses can be changed by changing the intensity or the frequency of the incident light. However, these parameters cannot be continuously changed in experiments, in contrast to the ellipticity which is moreover simple to adjust and acts as a control knob. While polarization of the incident light is very promising for controlling the shape of the generated attosecond light pulses, up to date, HHG is limited to a narrow range of ellipticities only. The project EPHHG aims to control continuously the shape of generated attosecond light pulses from incident elliptically polarized lights in the full range of laser ellipticities. I propose a theoretical and numerical investigation adapted for this purpose. It includes the development of both theoretical models and sophisticated numerical methods in order to simulate and understand the self-consistent light-matter interactions occurring during light propagation.

Arbeit, die ab Beginn des Projekts bis zum Ende des durch den Bericht erfassten Berichtszeitraums geleistet wurde, und die wichtigsten bis dahin erzielten Ergebnisse

We have derived equations for the USFA (Unified Strong Field Approximation).
We have developped an optimized version of our code to solve the Time Dependant Schrödinger Equation for 2 degrees of freedom of any laser polarization.

Fortschritte, die über den aktuellen Stand der Technik hinausgehen und voraussichtliche potenzielle Auswirkungen (einschließlich der bis dato erzielten sozioökonomischen Auswirkungen und weiter gefassten gesellschaftlichen Auswirkungen des Projekts)

We did not havae time to exploit the equations and the code we have obtained during the period of the MCSA EPHHG project.