F. Lépine
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View article: High order harmonic generation-based attosecond light sources and applications to quantum phenomena
High order harmonic generation-based attosecond light sources and applications to quantum phenomena Open
Attosecond science and technology have emerged as a promising path for improving our understanding of light–matter interaction. High harmonic generation based light sources combine high photon energy, broad spectrum, and short duration wit…
View article: Continuum-continuum Coulomb dipole integrals
Continuum-continuum Coulomb dipole integrals Open
Supplementary data tables for the article Angular momentum dependence in multiphoton ionization and attosecond time delays.
View article: Condensed Matter Systems Exposed to Radiation: Multiscale Theory, Simulations, and Experiment
Condensed Matter Systems Exposed to Radiation: Multiscale Theory, Simulations, and Experiment Open
This roadmap reviews the new, highly interdisciplinary research field studying the behavior of condensed matter systems exposed to radiation. The Review highlights several recent advances in the field and provides a roadmap for the develop…
View article: Matter and waves
Matter and waves Open
International audience
View article: Probing Photoionization Dynamics in Acetylene with Angle-Resolved Attosecond Interferometry
Probing Photoionization Dynamics in Acetylene with Angle-Resolved Attosecond Interferometry Open
Photoionization of acetylene by extreme ultraviolet light results in a stand-alone contribution from the outermost valence orbital, followed by well-separated photoelectron bands from deeper molecular orbitals. This makes acetylene an idea…
View article: THz to far-infrared spectra of the known crystal polymorphs of Phenylalanine
THz to far-infrared spectra of the known crystal polymorphs of Phenylalanine Open
There is renewed interest in the structure of the essential amino acid Phenylalanine in the solid state. Three new polymorphs were found in the years 2012 to 2014. Here, we investigate the structure, stability, and energetical ordering of …
View article: THz to far-infrared spectra of the known crystal polymorphs of phenylalanine
THz to far-infrared spectra of the known crystal polymorphs of phenylalanine Open
Organic molecules such as amino acids display different crystalline structures. We study the structure of four known crystal polymorphs of phenylalanine using DFT numerical computations and experimental vibrational spectra in the 1–40 THz …
View article: GlAIcomics: a deep neural network classifier for spectroscopy-augmented mass spectrometric glycans data
GlAIcomics: a deep neural network classifier for spectroscopy-augmented mass spectrometric glycans data Open
Carbohydrate sequencing is a formidable task identified as a strategic goal in modern biochemistry. It relies on identifying a large number of isomers and their connectivity with high accuracy. Recently, gas phase vibrational laser spectro…
View article: Condensed Matter Systems Exposed to Radiation: Multiscale Theory, Simulations, and Experiment
Condensed Matter Systems Exposed to Radiation: Multiscale Theory, Simulations, and Experiment Open
This paper reviews the new highly interdisciplinary research field studying the behavior of condensed matter systems exposed to radiation. The paper highlights several relevant examples of recent advances in the field and provides a roadma…
View article: Ultrafast dynamics in molecular ions following UV and XUV excitation: a perspective
Ultrafast dynamics in molecular ions following UV and XUV excitation: a perspective Open
Gas phase experiments combined with ultrafast technologies can provide information on the intrinsic properties of molecular systems at picosecond, femtosecond, or even attosecond timescales. However, these experiments are often limited to …
View article: Attosecond metrology of 2D charge distribution in molecules
Attosecond metrology of 2D charge distribution in molecules Open
Photoionization as a half-scattering process is not instantaneous. Usually, time delays in photoionization are of the order of few tens of attoseconds (1 as = 10$^{-18}$ s). While going from a single atom to a nano-object, one can expect t…
View article: Few-Femtosecond Isotope Effect in Polyatomic Molecules Ionized by Extreme Ultraviolet Attosecond Pulse Trains
Few-Femtosecond Isotope Effect in Polyatomic Molecules Ionized by Extreme Ultraviolet Attosecond Pulse Trains Open
Following ionization by an extreme ultraviolet (XUV) attosecond pulse train, a polyatomic molecule can be promoted to more-than-one excited states of the residual ion. The ensuing relaxation dynamics is often facilitated by several reactio…
View article: Transition from correlated to single-active-electron excitation in strontium nonlinear ionization
Transition from correlated to single-active-electron excitation in strontium nonlinear ionization Open
The nonlinear single and double ionization of Sr atoms as a result of their interaction with 800-nm Ti-sapphire laser pulses of 25-fs duration is experimentally investigated within the laser intensity range $I=3\phantom{\rule{0.16em}{0ex}}…
View article: Anisotropic dynamics of two-photon ionization: An attosecond movie of photoemission
Anisotropic dynamics of two-photon ionization: An attosecond movie of photoemission Open
Imaging in real time the complete dynamics of a process as fundamental as photoemission has long been out of reach because of the difficulty of combining attosecond temporal resolution with fine spectral and angular resolutions. Here, we a…
View article: Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition
Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition Open
We present a terahertz (THz) platform employing air plasma produced by an ultrashort two-color laser pulse as a broadband THz source and air biased coherent detection (ABCD) of the THz field. In contrast to previous studies, a simple peak …
View article: Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition
Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition Open
We present a recently developed terahertz platform. An air plasma produced by an ultrashort two-color laser pulse serves as a broadband terahertz source, with electric field that has peak amplitude in the MV/cm range. Air biased coherent d…
View article: Ultrafast Vibrational Relaxation Dynamics in XUV-Excited Polycyclic Aromatic Hydrocarbon Molecules
Ultrafast Vibrational Relaxation Dynamics in XUV-Excited Polycyclic Aromatic Hydrocarbon Molecules Open
Unraveling ultrafast molecular processes initiated by energetic radiation provides direct information on the chemical evolution under extreme conditions. A prominent example is interstellar media where complex molecules such as polycyclic …
View article: Glory oscillations in photoionization microscopy: Connection with electron dynamics and Stark spectral structures in the continuum
Glory oscillations in photoionization microscopy: Connection with electron dynamics and Stark spectral structures in the continuum Open
Contains fulltext : 224923.pdf (Publisher’s version ) (Open Access)
View article: High harmonic generation-2ω attosecond stereo-photoionization interferometry in N<sub>2</sub>
High harmonic generation-2ω attosecond stereo-photoionization interferometry in N<sub>2</sub> Open
We have investigated photoionization delays in N 2 by combining an extreme ultraviolet (XUV) attosecond pulse train generated by high harmonic generation (HHG) and a second harmonic femtosecond pulse with angularly resolved photoelectron s…
View article: Coupling of a velocity-map imaging spectrometer with an electron cyclotron resonance ion source
Coupling of a velocity-map imaging spectrometer with an electron cyclotron resonance ion source Open
Synopsis A velocity-map imaging spectrometer has been coupled with an electron cyclotron resonance ion source for the first time. This new set-up aims at the study of the photodetachment of benchmark molecular anions, especially thermionic…
View article: Attosecond delays in photoionization of diatomic and polyatomic molecules
Attosecond delays in photoionization of diatomic and polyatomic molecules Open
Synopsis We have investigated the photoionization dynamics of several molecular systems using attosecond in-terferometric techniques based on ultrashort extreme ultraviolet (XUV) pulses. For diatomic molecules such as N 2 , we can get a de…
View article: Phase sensitive coherent control excitation schemes applied to photoionization microscopy of the hydrogen atom
Phase sensitive coherent control excitation schemes applied to photoionization microscopy of the hydrogen atom Open
Synopsis Photoionization microscopy (PM) is employed for imaging the flux of slow (meV) electrons ejected via atomic photoionization in the presence of a static electric field. Just above the ionization limit continuum and quasi-disrete st…