PLAS@PAR PHD DAY
Plas@Par is pleased to announce the organization of its PhD Day, which will take place on June 12, 2026.
This event will highlight PhD students’ research through a series of talks. It will provide an opportunity to showcase ongoing projects within the community, exchange ideas on recent advances, and foster collaborations among doctoral researchers.
The day will also be a friendly occasion to meet fellow PhD students and engage in informal discussions over breakfast and lunch.
We also invite PhD students interested in presenting their work to give a short research talk during the event. Volunteers are encouraged to indicate their interest in the registration form.
Location: Amphithéâtre Charpak, Jussieu Campus (accessible via Tour 22, level SB)
Registration (attendance and talk proposals): Plas@Par PhD Student Day - June 12, 2026
The preliminary program:
| Time | Title | Abstract | Speaker |
|---|---|---|---|
| 09:00 | Welcome coffee | ||
| 09:30 | Radio solar bursts by laser-plasma interaction | ℹ️ | Louise Cornet, LULI |
| 09:50 | Magnetic field from helical plasma waves driven by spatio-temporal Light Spring | ℹ️ | Jeremy La Porte, LULI |
| 10:00 | TBA | ||
| 12:00 | Lunch | ||
| 13:30 | TBA | ||
| 15:00 | Coffee break | ||
| 15:30 | TBA | ||
| 17:00 | Aperitif |
Radio solar bursts by laser-plasma interaction
Type III solar radio bursts are phenomena produced by highly energetic electrons (1 to 100 keV) emitted during solar flares. These electrons propagate through the solar wind and excite electrostatic waves at the electron plasma frequency ωp. Through wave coupling, these waves re-emit electromagnetic radiation at ωp and its harmonics.
Since 2020, experiments at LULI2000 have shown that laser-plasma interactions can reproduce these processes through stimulated Raman instability and Langmuir wave generation. A new experimental setup including an external magnetic field is used to investigate wave polarization under solar-wind-like conditions.
SMILEI Particle-In-Cell simulations are employed to model plasma dynamics, guide the experiments, and identify wave coupling processes responsible for electromagnetic emission at ωp and harmonics.
CloseMagnetic field from helical plasma waves driven by spatio-temporal Light Spring
Orbital angular momentum (OAM) transfer in laser-plasma interactions is a fundamental process with important applications such as strong magnetic field generation.
We present a ray-based approach where refraction in plasmas with azimuthal density gradients enables non-dissipative OAM transfer between laser and plasma.
Using spatio-temporally shaped laser pulses known as light springs, we demonstrate the generation of helical plasma waves and strong axial magnetic fields. SMILEI simulations confirm efficient angular momentum transfer to electrons, producing longitudinal magnetic fields reaching several hundred Tesla.
CloseWe hope to see many of you there!