K. Veyrinas
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View article: Multiscale modeling of HHG and its applications
Multiscale modeling of HHG and its applications Open
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
View article: Chromatic aberrations correction of attosecond high-order harmonic beams by flat-top spatial shaping of the fundamental beam
Chromatic aberrations correction of attosecond high-order harmonic beams by flat-top spatial shaping of the fundamental beam Open
Attosecond pulses created by high-order harmonic generation in gases often exhibit strong chromatic aberrations, arising from the broad bandwidth and wavelength-dependent nonlinear light–matter interaction. When the driving laser intensity…
View article: Contrôle spatial de la structure temporelle d’impulsions attosecondes
Contrôle spatial de la structure temporelle d’impulsions attosecondes Open
International audience
View article: Quand les harmoniques d'un rayonnement ultraviolet extrême se focalisent
Quand les harmoniques d'un rayonnement ultraviolet extrême se focalisent Open
Cet article présente brièvement les principales caractéristiques de la technique GHOE (génération d'harmoniques d'ordre élevé), puis montre comment les mettre à profit pour contrôler les propriétés spatiales d'un rayonnement ultraviolet ex…
View article: Spectral filtering of high-order harmonics via optics-free focusing
Spectral filtering of high-order harmonics via optics-free focusing Open
Controlling the wavefront of an extreme ultraviolet (XUV) high-order harmonic beam during the generation process offers the capability of modifying the beam properties without resorting to any XUV optics. By characterizing the XUV intensit…
View article: Unmasking the <i>cis</i>-Stilbene Phantom State via Vacuum Ultraviolet Time-Resolved Photoelectron Spectroscopy and <i>Ab Initio</i> Multiple Spawning
Unmasking the <i>cis</i>-Stilbene Phantom State via Vacuum Ultraviolet Time-Resolved Photoelectron Spectroscopy and <i>Ab Initio</i> Multiple Spawning Open
We present the first vacuum ultraviolet time-resolved photoelectron spectroscopy (VUV-TRPES) study of photoisomerization dynamics in the paradigmatic molecule cis-stilbene. A key reaction intermediate in its dynamics, known as the p…
View article: Focusing Properties of High-Order Harmonics
Focusing Properties of High-Order Harmonics Open
Many applications of the extreme ultraviolet (XUV) radiation obtained by high-order harmonic generation (HHG) in gases require a small focus area in order to enable attosecond pulses to reach a high intensity. Here, high-order harmonics ge…
View article: Aurore: A platform for ultrafast sciences
Aurore: A platform for ultrafast sciences Open
We present the Aurore platform for ultrafast sciences. This platform is based on a unique 20 W, 1 kHz, 26 fs Ti:sapphire laser system designed for reliable operation and high intensity temporal contrast. The specific design ensures the hig…
View article: Ultrafast molecular frame electronic coherences from lab frame scattering anisotropies
Ultrafast molecular frame electronic coherences from lab frame scattering anisotropies Open
Electronic coherences in molecules are ultrafast charge oscillations on the molecular frame (MF) and their direct observation and separation from electronic population dynamics is challenging. Here we present a valence shell lab frame (LF)…
View article: Optics-Free Focusing and Application to Spectral Filtering of XUV Beam
Optics-Free Focusing and Application to Spectral Filtering of XUV Beam Open
We experimentally characterize XUV intensity profiles and wavefronts, and demonstrate XUV beams focusing without resorting any optics. We use this coherent effect to spectrally filter group of harmonics. Simulations show possible control o…
View article: Optics-free focusing down to micrometer spot size and spectral filtering of XUV harmonics
Optics-free focusing down to micrometer spot size and spectral filtering of XUV harmonics Open
Controlling the wavefront of an extreme ultraviolet (XUV) high-order harmonic beam during the generation process offers to focus the beam without resorting to any XUV optics. By characterizing the XUV intensity profile and wavefront, we qu…
View article: Dissociative photoionization of NO across a shape resonance in the XUV range using circularly polarized synchrotron radiation
Dissociative photoionization of NO across a shape resonance in the XUV range using circularly polarized synchrotron radiation Open
We report benchmark results for dissociative photoionization (DPI) spectroscopy and dynamics of the NO molecule in the region of the σ* shape resonance in the ionization leading to the NO+(c 3Π) ionic state. The experimental study combines…
View article: Evidence of depolarization and ellipticity of high harmonics driven by ultrashort bichromatic circularly polarized fields
Evidence of depolarization and ellipticity of high harmonics driven by ultrashort bichromatic circularly polarized fields Open
View article: Time-resolved multi-mass ion imaging: Femtosecond UV-VUV pump-probe spectroscopy with the PImMS camera
Time-resolved multi-mass ion imaging: Femtosecond UV-VUV pump-probe spectroscopy with the PImMS camera Open
The Pixel-Imaging Mass Spectrometry (PImMS) camera allows for 3D charged particle imaging measurements, in which the particle time-of-flight is recorded along with (x, y) position. Coupling the PImMS camera to an ultrafast pump-probe veloc…
View article: Molecular frame photoemission by a comb of elliptical high-order harmonics: a sensitive probe of both photodynamics and harmonic complete polarization state
Molecular frame photoemission by a comb of elliptical high-order harmonics: a sensitive probe of both photodynamics and harmonic complete polarization state Open
Due to the intimate anisotropic interaction between an XUV light field and a molecule resulting in photoionization (PI), molecular frame photoelectron angular distributions (MFPADs) are most sensitive probes of both electronic/nuclear dyna…
View article: Molecular frame photoemission: a sensitive probe of the complete polarization state of high harmonic generation
Molecular frame photoemission: a sensitive probe of the complete polarization state of high harmonic generation Open
Molecular polarimetry, based on the determination of molecular frame photoemission in dissociative photoionization (DPI) studied by electron-ion coincident momentum spectroscopy, allows us to measure the complete state of elliptically pola…
View article: Molecular frame photoemission : a probe of electronic/nuclear photodynamics and polarization state of the ionizing light
Molecular frame photoemission : a probe of electronic/nuclear photodynamics and polarization state of the ionizing light Open
View article: Photoémission dans le référentiel moléculaire : une sonde de la dynamique électronique et nucléaire et de l’état de polarisation du rayonnement ionisant
Photoémission dans le référentiel moléculaire : une sonde de la dynamique électronique et nucléaire et de l’état de polarisation du rayonnement ionisant Open
This is thesis is dedicated to the study and the use of the remarkable properties of the molecular frame photoelectron angular distribution (MFPAD). This observable is a very sensitive probe of both the photoionization (PI) processes in sm…