Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MO: Fachverband Molekülphysik
MO 3: Chiral Molecules
MO 3.6: Vortrag
Montag, 9. März 2020, 15:30–15:45, f102
Multiphoton ionization of chiral molecules: what can we control and where’s the button to control it? — •Andres Ordonez1,2 and Olga Smirnova1,2 — 1Max-Born-Institut, Berlin, Germany — 2Technische Universität Berlin, Berlin, Germany
We have developed a new approach to analyse the photoelectron angular distribution (PAD) resulting from multiphoton ionization of isotropic molecular samples. It reveals how the correlations encoded in the tensor that describes the orientation averaged photoelectron angular distribution can be cleanly written as a sum of products between molecular tensor invariants (MTIs) and electric field tensor invariants (ETIs). By explicitly determining this connection between MTIs and ETIs we show which polarizations of the electric field must be used to address specific MTIs. Our findings provide not only a solid basis for the characterization of MTIs, but also allow a transparent application of coherent control of the correlations in the PAD. Using our formalism we have successfully identified the MTIs and ETIs responsible for the enantiosensitive asymmetry observed in the photoionization of isotropically oriented chiral molecules via a phase-locked crossed-polarized ω-2ω fields in Ref. [PRL 121, 253201]. Our results clearly reveal the role of the chiral setup [PRA 98, 063428] in the absence of a well defined rotation direction of the electric field, expose the fundamental connection between the chiral setup and the ETIs, and reveal the role of the molecular phase in the formation of the asymmetry. This approach vastly extends our previous ideas [PRA 98, 063428] into the realm of multiphoton ionization and coherent control.