Attosecond coherent control of electronic wave packets in two-colour photoionization using a novel timing tool for seeded free-electron laser
Document Type
Article
Publication Date
2-1-2023
Abstract
In ultrafast spectroscopy, the temporal resolution of time-resolved experiments depends on the duration of the pump and probe pulses, and on the control and characterization of their relative synchronization. Free-electron lasers operating in the extreme ultraviolet and X-ray spectral regions deliver pulses with femtosecond and attosecond duration in a broad array of pump–probe configurations to study a wide range of physical processes. However, this flexibility, together with the large dimensions and high complexity of the experimental set-ups, limits control of the temporal delay to the femtosecond domain, thus precluding a time resolution below the optical cycle. Here we demonstrate a novel single-shot technique able to determine the relative synchronization between an attosecond pulse train—generated by a seeded free-electron laser—and the optical oscillations of a near-infrared field, with a resolution of one atomic unit (24 as). Using this attosecond timing tool, we report the first example of attosecond coherent control of photoionization in a two-colour field by manipulating the phase of high-order near-infrared transitions.
Publication Source (Journal or Book title)
Nature Photonics
First Page
200
Last Page
207
Recommended Citation
Maroju, P., Di Fraia, M., Plekan, O., Bonanomi, M., Merzuk, B., Busto, D., Makos, I., Schmoll, M., Shah, R., Ribič, P., Giannessi, L., De Ninno, G., Spezzani, C., Penco, G., Demidovich, A., Danailov, M., Coreno, M., Zangrando, M., Simoncig, A., Manfredda, M., Squibb, R., Feifel, R., Bengtsson, S., Simpson, E., Csizmadia, T., Dumergue, M., Kühn, S., Ueda, K., Li, J., Schafer, K., Frassetto, F., Poletto, L., & Prince, K. (2023). Attosecond coherent control of electronic wave packets in two-colour photoionization using a novel timing tool for seeded free-electron laser. Nature Photonics, 17 (2), 200-207. https://doi.org/10.1038/s41566-022-01127-3