Universality of photoelectron circular dichroism in the photoionization of chiral molecules

S. Beaulieu 1 A. Ferré 1 R. Géneaux 2, 3 R Canonge 1 D. Descamps 1 B. Fabre 1 N. Fedorov 1 F. Légaré 4 S. Petit 1 T. Ruchon 2, 3 Valérie Blanchet 1 Y. Mairesse 1, 3 B. Pons 1
3 ATTO - Attophysique
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamique et Lasers (ex SPAM)
4 Advanced Laser Light Source-INRS-EMT
EMT-INRS - Énergie Matériaux Télécommunications - INRS
Abstract : Photoionization of chiral molecules by circularly polarized radiation gives rise to a strong forward/backward asymmetry in the photoelectron angular distribution, referred to as photoelectron circular dichroism (PECD). Here we show that PECD is a universal effect that reveals the inherent chirality of the target in all ionization regimes: single photon, multiphoton, above-threshold and tunnel ionization. These different regimes provide complementary spectroscopic information at electronic and vibrational levels. The universality of the PECD can be understood in terms of a classical picture of the ionizing process, in which electron scattering on the chiral potential under the influence of a circularly polarized electric field results in a strong forward/backward asymmetry.
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Submitted on : Wednesday, October 19, 2016 - 2:10:16 PM
Last modification on : Friday, April 26, 2019 - 1:28:07 PM

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S. Beaulieu, A. Ferré, R. Géneaux, R Canonge, D. Descamps, et al.. Universality of photoelectron circular dichroism in the photoionization of chiral molecules. New Journal of Physics, Institute of Physics: Open Access Journals, 2016, 18, pp.102002. ⟨10.1088/1367-2630/18/10/102002⟩. ⟨cea-01383954⟩

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