Spatio-Temporal Symmetries of Electronic Chirality Flips in Oriented RbCs Induced by two Coincident Laser Pulses with Circular ++, +-, -+, -- Polarizations.

Autor: Liu G; State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China., Manz J; State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China.; Institut für Chemie und Biochemie, Freie Universität Berlin, 14195, Berlin, Germany.; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China., Wang H; State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China., Yang Y; State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, 030006, China.; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
Jazyk: angličtina
Zdroj: Chemphyschem : a European journal of chemical physics and physical chemistry [Chemphyschem] 2024 Nov 18; Vol. 25 (22), pp. e202400595. Date of Electronic Publication: 2024 Sep 12.
DOI: 10.1002/cphc.202400595
Abstrakt: Recently it has been shown that two coincident well designed laser pulses with two different combinations of circular polarizations ( + + ${ + + }$ or - + ${ - + }$ ) can create chiral electronic densities in an oriented heteronuclear diatomic molecule. Subsequently, the chirality flips from the electronic R a to S a to R a to S a etc. enantiomers, with periods in the femtosecond (fs) and attosecond (as) time domains. The results were obtained by means of quantum dynamics simulations for oriented NaK. Here we investigate the electronic chirality flips in oriented RbCs induced by all possible ( + + ${ + + }$ , - + ${ - + }$ , + - ${ + - }$ , - - ${ - - }$ ) combinations of circular polarizations of two coincident well-designed laser pulses. Accordingly, the + + ${ + + }$ and - - ${ - - }$ as well as the + - ${ + - }$ and - + ${ - + }$ combinations generate opposite electronic enantiomers, e. g. R a versus S a , followed by opposite periodic chirality flips, e. g. from R a to S a to R a to S a etc. versus from S a to R a to S a to R a etc, with periods in the fs and as time domains, respectively. The laser induced spatio-temporal symmetries are derived from first principles and illustrated by quantum dynamics simulations.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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