Ultrafast electron dynamics in phenylalanine initiated by attosecond pulses

F. Calegari, D. Ayuso, A. Trabattoni, L. Belshaw, S. De Camillis, S. Anumula, F. Frassetto, L. Poletto, A. Palacios, P. Decleva, J. B. Greenwood, F. Martín*, M. Nisoli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

492 Citations (Scopus)


In the past decade, attosecond technology has opened up the investigation of ultrafast electronic processes in atoms, simple molecules, and solids. Here, we report the application of isolated attosecond pulses to prompt ionization of the amino acid phenylalanine and the subsequent detection of ultrafast dynamics on a sub-4.5-femtosecond temporal scale, which is shorter than the vibrational response of the molecule. The ability to initiate and observe such electronic dynamics in polyatomic molecules represents a crucial step forward in attosecond science, which is progressively moving toward the investigation of more and more complex systems.

Original languageEnglish
Pages (from-to)336-339
Number of pages4
Issue number6207
Publication statusPublished - 17 Oct 2014
Externally publishedYes


  • Charge migration
  • Attosecond science
  • Ultrafast Spectroscopy
  • Phenylalanine
  • Attochemistry


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