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Related Experiment Video

Updated: May 28, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Light-induced conical intersections: topological phase, wave packet dynamics, and molecular alignment.

Gábor J Halász¹, Milan Šindelka, Nimrod Moiseyev

¹Department of Information Technology, University of Debrecen, PO Box 12, H-4010 Debrecen, Hungary.

The Journal of Physical Chemistry. A

|November 3, 2011

Summary

This summary is machine-generated.

Light-induced conical intersections (LICIs) alter molecular properties. In sodium dimers, LICIs exhibit a Berry phase of π, impacting molecular dynamics and alignment.

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Area of Science:

Quantum Chemistry
Molecular Physics
Laser Spectroscopy

Background:

Light-matter interactions can induce novel phenomena in molecules.
Light-induced conical intersections (LICIs) theoretically alter field-free molecular properties.

Purpose of the Study:

Review LICIs in diatomic molecules.
Provide new insights into the LICI phenomenon.
Investigate LICI impact on molecular dynamics and alignment.

Main Methods:

Theoretical calculations.
Berry phase analysis for a sodium dimer.
Simulation of molecular wave packet dynamics and alignment.

Main Results:

LICIs were investigated in diatomic molecules, using sodium dimer as a model.
A Berry phase of π was calculated for a contour around the LICI point.
LICIs significantly impact molecular wave packet dynamics and alignment.

Conclusions:

LICIs are a significant phenomenon in light-matter interactions.
The Berry phase associated with LICIs is comparable to natural conical intersections.
LICIs offer new avenues for controlling molecular behavior.