Ultrafast dynamics of the lowest-lying neutral states in carbon dioxide

Travis W. Wright, Elio G. Champenois, James P. Cryan, Niranjan Shivaram, Chan Shan Yang, Ali Belkacem

Research output: Contribution to journalArticlepeer-review


We present a study of the ultrafast dissociation dynamics of the lowest-lying electronic excited states in CO2 by using ultraviolet (UV) and extreme-ultraviolet (XUV) pulses from high-order harmonic generation. We observe two primary dissociation channels: a direct dissociation channel along the Πg1 electronically excited manifold, and a second channel which results from the mixing of electronic states. The direct dissociation channel is found to have a lifetime which is shorter than our experimental resolution, whereas the second channel has a significantly longer lifetime of nearly 200 fs. In this long-lived channel we observe a beating of the vibrational populations with a period of ∼133 fs.

Original languageEnglish
Article number023412
JournalPhysical Review A
Issue number2
Publication statusPublished - 2017 Feb 17
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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