6533b838fe1ef96bd12a479b

RESEARCH PRODUCT

Realization of time-resolved two-vacuum-ultraviolet-photon ionization

Olivier FaucherE. P. BenisJ. KruseD. CharalambidisD. CharalambidisA. Peralta CondeP. Tzallas

subject

spectroscopyattosecondPhoton[ PHYS.PHYS.PHYS-ATOM-PH ] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]Physics::Opticsphotoionisationnm01 natural sciences7. Clean energyAtmospheric-pressure laser ionization010309 opticsFrequency conversionIonizationhigher order harmonic generation0103 physical sciencesPhysics::Atomic and Molecular Clustersethylenemoleculestwo-photon processesPhysics::Chemical Physics010306 general physicsUltrafast dynamicsPhysics[PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]photodissociationdynamicsVUVAtomic and Molecular Physics and Opticslaser-pulsesVacuum ultravioletExtreme ultravioletmolecule-photon collisionsXUX32.80.Rm 42.65.Re 42.65.KyHHGAtomic physicsultrafast internal-conversionorganic compoundsphysicsRealization (systems)oxygen

description

International audience; Ultrafast dynamics of excited molecules is studied through time-resolved two-vacuum-ultraviolet (vuv)- photon ionization using a nonlinear volume autocorrelator unit. The two-vuv-photon process is induced by the intense fifth harmonic radiation of a femtosecond Ti:sapphire laser. In a proof-of-principle experiment, ultrafast dynamics of excited ethylene and oxygen molecules are investigated. Molecular decay times are deduced by comparing the experimental data with the results of a numerical model that accounts for the spatial and temporal characteristics of the harmonic field. The present experiments pave a convenient way for time domain investigations in the vuv-xuv spectral region in all states of matter at few femtosecond to subfemtosecond temporal scales.

https://hal.archives-ouvertes.fr/hal-00402819