Attosecond-resolved photoionization of chiral molecules - Laboratoire de Chimie Physique-Matière et Rayonnement Accéder directement au contenu
Article Dans Une Revue Science Année : 2017

Attosecond-resolved photoionization of chiral molecules

B. Fabre
Y. Mairesse

Résumé

Chiral light-matter interactions have been investigated for two centuries, leading to the discovery of many chiroptical processes used for discrimination of enantiomers. Whereas most chiroptical effects result from a response of bound electrons, photoionization can produce much stronger chiral signals that manifest as asymmetries in the angular distribution of the photoelectrons along the light-propagation axis. We implemented self-referenced attosecond photoelectron interferometry to measure the temporal profile of the forward and backward electron wave packets emitted upon photoionization of camphor by circularly polarized laser pulses. We measured a delay between electrons ejected forward and backward, which depends on the ejection angle and reaches 24 attoseconds. The asymmetric temporal shape of electron wave packets emitted through an autoionizing state further reveals the chiral character of strongly correlated electronic dynamics.

Dates et versions

hal-01754779 , version 1 (30-03-2018)

Identifiants

Citer

S. Beaulieu, A. Comby, A. Clergerie, J. Caillat, D. Descamps, et al.. Attosecond-resolved photoionization of chiral molecules. Science, 2017, 358 (6368), pp.1288 - 1294. ⟨10.1126/science.aao5624⟩. ⟨hal-01754779⟩
165 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More