Abstract
A complete investigation of the ultrafast dynamics happening in highly excited molecular states represents a true challenge. On the theoretical side the mixed character and the delocalized nature of these excitations is rather demanding. Moreover, their experimental observation is not straightforward. As the lifetime of these states is usually very short (few hundreds to few tens of femtoseconds) their excitation requires few-femtosecond light pulses in the extreme-ultraviolet region (EUV) [1]. Here we used 10-fs EUV pulses at ~17 eV to populate the excited states of carbon dioxide below the first excited state of the molecular cation ( ̃) corresponding to the HOMO-1 photoionization. Their population is subsequently probed by a 15-fs IR pulse centred around 800 nm (photon energy about 1.56 eV), revealing rich dynamics and oscillations with a period as fast as 24 fs, never observed before.
© 2019 IEEE
PDF ArticleMore Like This
Rocío Borrego-Varillas, Matteo Lucchini, Thomas Schnappinger, Mario Murari, Giacinto D. Lucarelli, Filippo Daniele, Fabio Frassetto, Luca Poletto, Regina de Vivie-Riedle, and Mauro Nisoli
M3B.3 International Conference on Ultrafast Phenomena (UP) 2020
William K. Peters, David E. Couch, Ryan C. Fortenberry, Henry C. Kapteyn, and Margaret M. Murnane
UTu1A.2 International Conference on Ultrafast Phenomena (UP) 2016
F. Calegari, A. Trabattoni, S. Anumula, M. Lucchini, L. Wang, F. Frassetto, L. Poletto, M. Hochlaf, G. Sansone, M. Vrakking, and M. Nisoli
CG_2_2 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2013