Related Experiment Video
Updated: Jun 13, 2025

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Coherent Ultrafast Stimulated X-Ray Raman Spectroscopy of Dissipative Conical Intersections
Florian Otterpohl1, Daniel Keefer2, Shaul Mukamel3
1I. Institut für Theoretische Physik, <a href="https://ror.org/00g30e956">Universität Hamburg</a>, Notkestraße 9, 22607 Hamburg, Germany.
Abstract:
The quantum coherent dynamics of a vibronic wave packet in a molecule passing through a conical intersection can be revealed using attosecond transient coherent Raman spectroscopy. In particular, the time evolution of the electronic coherence can be monitored in the presence of vibrational dynamics. So far, the technique has been investigated without including environmental quantum noise. Here, we employ the numerically exact hierarchy equation of motion approach to show that the transient coherent Raman signals are robust and accessible on times of up to a few hundred femtoseconds with respect to electonic and vibrational dephasing.
More Related Videos
Related Concept Videos
Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent...
UV–Vis Spectroscopy: Molecular Electronic Transitions
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
Atomic Emission Spectroscopy: Interference

