Project description
Controlling attosecond pulse shapes via elliptical polarisation
High-order harmonic generation (HHG) occurs when a laser pulse interacts with a medium, producing attosecond light pulses that are vital for studying ultrafast phenomena. While intensity and frequency adjustments can alter pulse shapes, they are not easily modified in experiments. Instead, ellipticity serves as a simple control, though HHG remains limited to a narrow range of ellipticities. With support from the Marie Skłodowska-Curie Actions programme, the EPHHG project will develop theoretical models and advanced numerical methods to simulate and understand the self-consistent interactions between light and matter during light propagation. The project aims to enable continuous control of the shape of attosecond light pulses generated by incident elliptically polarised light across the entire range of laser ellipticities.
Objective
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.
Fields of science (EuroSciVoc)
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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(opens in new window) HORIZON-MSCA-2023-PF-01
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75794 Paris
France
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