CHAPTER 6: Light-induced Conical Intersections

A. Csehi, G. Halász, L. S. Cederbaum, A. Vibók

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

When exposing molecules to resonant laser light, a new feature emerges. This feature is a conical intersection induced by the light, which cannot be avoided even in the case of diatomic molecules. The angle θ between the laser polarization and the molecular axis becomes the missing dynamical variable that, together with the stretching coordinate, establish the space in which the induced conical intersection (called the "light-induced conical intersection", LICI) can exist. In contrast to natural CIs, which are ubiquitous in polyatomic systems and hard to manipulate, the light-induced conical intersections can easily be steered. Their positions can be controlled by the laser frequency, while the laser intensity determines the strength of the nonadiabatic coupling. The presence of a LICI in a molecular system provides a source for numerous static and dynamic nonadiabatic phenomena. Among others the LICI has a strong impact on the spectroscopic and dynamical properties of diatomic molecules. Motivated by recent theoretical works, several subjects are reviewed and analyzed showing that the LICI in diatomics gives rise to a variety of nonadiabatic phenomena.

Original languageEnglish
Title of host publicationCold Chemistry
Subtitle of host publicationMolecular Scattering and Reactivity Near Absolute Zero
EditorsFranck Lepine, Marc J. J. Vrakking
PublisherRoyal Society of Chemistry
Pages183-217
Number of pages35
Edition13
DOIs
Publication statusPublished - Jan 1 2018

Publication series

NameRSC Theoretical and Computational Chemistry Series
Number13
Volume2018-January
ISSN (Print)2041-3181
ISSN (Electronic)2041-319X

ASJC Scopus subject areas

  • Chemistry(all)
  • Computer Science Applications

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  • Cite this

    Csehi, A., Halász, G., Cederbaum, L. S., & Vibók, A. (2018). CHAPTER 6: Light-induced Conical Intersections. In F. Lepine, & M. J. J. Vrakking (Eds.), Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero (13 ed., pp. 183-217). (RSC Theoretical and Computational Chemistry Series; Vol. 2018-January, No. 13). Royal Society of Chemistry. https://doi.org/10.1039/9781788012669-00183