Elsa Baynard

Two-chamber gas target for laser-plasma electron source

P. Drobniak, Elsa Baynard, A. Beck, J. Demailly et autres

Exploring novel target schemes for laser wakefield accelerators is essential to address the challenge of increasing repetition rates while ensuring the stability and quality of the produced electron beams. This paper introduces and discusses the prototyping of a two-chamber gas target, integrated …

fr (code pays fourni par la source)

Extreme-ultraviolet vector-vortex beams with tunable topological charge and polarization distribution

Alok Kumar Pandey, Alba De Las Heras Munoz, Julio San Román, Elsa Baynard et autres

In this work, we exploit HHG in a noble gas to merge the azimuthally twisted wavefront of a vortex beam and the spatially varying polarization of a vector beam, yielding EUV vector-vortex beams (VVB) that are tailored simultaneously in their SAM and …

fr, es, us (code pays fourni par la source)

Interferometric measurement of the deflection of light by light in air

Adrien E. Kraych, Aurélie Max Mailliet, F. Couchot, Xavier Sarazin et autres

The aim of the DeLLight (deflection of light by light) experiment is to observe optical nonlinearity in vacuum, as predicted by quantum electrodynamics, by measuring the refraction of a low-intensity focused laser pulse (probe) when crossing the effective vacuum index gradient induced …

fr (code pays fourni par la source)

Performance of a Sagnac interferometer to observe vacuum optical nonlinearity

Aurélie Max Mailliet, Adrien E. Kraych, F. Couchot, Xavier Sarazin et autres

In quantum electrodynamics, vacuum becomes a nonlinear optical medium: its optical index should be modified in the presence of intense external electromagnetic fields. The DeLLight project (Deflection of Light by Light) aims to observe this effect using intense focused femtosecond laser pulses …

fr (code pays fourni par la source)

Interferometric measurement of the deflection of light by light in air

Adrien E. Kraych, Aurélie Max Mailliet, F. Couchot, Xavier Sarazin et autres

The aim of the DeLLight (Deflection of Light by Light) experiment is to observe for the first time the optical nonlinearity in vacuum, as predicted by Quantum Electrodynamics, by measuring the refraction of a low-intensity focused laser pulse (probe) when crossing the …

fr (code pays fourni par la source)

Performance of a Sagnac interferometer to observe vacuum optical nonlinearity

Aurélie Max Mailliet, Adrien E. Kraych, F. Couchot, Xavier Sarazin et autres

In Quantum Electrodynamics, vacuum becomes a nonlinear optical medium: its optical index should be modified in the presence of intense external electromagnetic fields. The DeLLight project (Deflection of Light by Light) aims to observe this effect using intense focused femtosecond laser pulses …

fr (code pays fourni par la source)

Two-chamber gas target for laser-plasma accelerator electron source

P. Drobniak, Elsa Baynard, K. Cassou, D. Douillet et autres

Exploring new target schemes for laser wakefield accelerators is essential to meet the challenge of increasing repetition rates while ensuring stability and quality of the produced electron beams. The prototyping of a two-chamber gas cell integrated into the beam line and operating …

fr (code pays fourni par la source)

Random scan optimization of a laser-plasma electron injector based on fast particle-in-cell simulations

P. Drobniak, Elsa Baynard, C. Bruni, K. Cassou et autres

The optimization and advanced study of a laser-plasma electron injector are presented based on a truncated ionization injection scheme for high quality beam production. The smilei code is used with laser envelope approximation and a low number of particles per cell to …

fr (code pays fourni par la source)

Extreme ultraviolet vector-vortex beams from laser high order harmonic generation

Olivier Guilbaud, Alok Kumar Pandey, Alba De Las Heras Munoz, Julio San Román et autres

High-order harmonic generation (HHG) is an instrumental process enabling the transfer of short infrared pulse coherence properties into the Extreme Ultraviolet (EUV) spectral range. This phenomenon has opened the way to ultrafast pump-probe experiments at the nanoscale level. Recently, HHG has provided …

fr, es, us (code pays fourni par la source)

Fast Particle-in-Cell simulations-based method for the optimisation of a laser-plasma electron injector

P. Drobniak, Elsa Baynard, C. Bruni, K. Cassou et autres

A method for the optimisation and advanced studies of a laser-plasma electron injector is presented, based on a truncated ionisation injection scheme for high quality beam production. The SMILEI code is used with laser envelope approximation and a low number of particles …

fr (code pays fourni par la source)

Laserix : Une plate-forme pour le développement large spectre d’applications de la lumière intense

Elsa Baynard, K. Cassou, P. Drobniak, J. Demailly et autres

LASERIX est une plateforme de l’IJClab sur le campus de l’Université Paris Saclay. Le laser est une chaîne CPA de niveau 50 TW à 10 Hz. Des thématiques de recherche en rapport avec la physique des deux infinis sont menées en parallèle …

fr (code pays fourni par la source)

Extreme-ultraviolet structured beams via high harmonic generation

Alok Kumar Pandey, Alba de las Heras, Julio San Román, Javier Serrano et autres

fr, es, us (code pays fourni par la source)