High-order harmonic generation triggered by elliptically polarized laser pulses

Información del proyecto

EPHHG

Identificador del acuerdo de subvención: 101154681

DOI

10.3030/101154681

Proyecto finalizado el 7 Mayo 2025

Fecha de la firma de la CE 2 Mayo 2024

Fecha de inicio 1 Junio 2024

Fecha de finalización 31 Mayo 2026

Financiado con arreglo a

• Marie Skłodowska-Curie Actions (MSCA)

Coste total

Sin datos

Aportación de la UE

€ 195 914,88

Coordinado por

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France

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

Período documentado: 2024-06-01 hasta 2026-05-31

Resumen del contexto y de los objetivos generales del proyecto

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.

Trabajo realizado desde el comienzo del proyecto hasta el final del período abarcado por el informe y los principales resultados hasta la fecha

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.

Avances que van más allá del estado de la técnica e impacto potencial esperado (incluida la repercusión socioeconómica y las implicaciones sociales más amplias del proyecto hasta la fecha)

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