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Related Experiment Video

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Towards disentangling coupled electronic-vibrational dynamics in ultrafast non-adiabatic processes

Blanchet¹, Lochbrunner, Schmitt

¹Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada.

Faraday Discussions

|October 21, 2000

Summary

Femtosecond time-resolved photoelectron spectroscopy (TRPES) investigates molecular excited states. This technique studies ultrafast dynamics like internal conversion in polyatomic molecules.

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Area of Science:

Physical Chemistry
Chemical Physics
Molecular Dynamics

Background:

Femtosecond time-resolved photoelectron spectroscopy (TRPES) is an emerging technique.
It is sensitive to electronic configurations and vibrational dynamics.
Well-suited for studying non-adiabatic processes on sub-picosecond timescales.

Purpose of the Study:

To explore the application of TRPES for investigating polyatomic excited state dynamics.
To discuss the technical requirements for advanced TRPES experiments.
To present examples of TRPES applied to molecular dynamics.

Main Methods:

Utilizing femtosecond lasers for high temporal resolution.
Employing energy- and angle-resolved photoelectron spectrometers.
Developing new detectors for coincidence measurements.

Main Results:

Demonstrated TRPES's capability in probing ultrafast dynamics.
Showcased applications in diatomic wavepacket dynamics.
Illustrated studies of non-adiabatic processes in polyatomic molecules.

Conclusions:

TRPES is a powerful tool for understanding excited state dynamics.
Technical advancements enable detailed investigations of molecular processes.
The technique provides insights into fundamental chemical transformations.