The capability to follow and control ultrafast electron dynamics in matter with light pulses is a long-sought goal, with important implications in many fields of technology and research. In a semiconductor, for example, charge injection by few-femtosecond infrared pulses could be used to turn the material into a conductive state, realizing ultrafast switches in opto-electronics, a milestone that promises to increase the limiting speed of data processing and information encoding. This technological breakthrough can only stem from a comprehensive knowledge of light-induced charge injection, a key challenge of modern solid-state physics and photonics.
Publication: Inzani, G., Adamska, L., Eskandari-asl, A. et al. ,”Field-driven attosecond charge dynamics in germanium”, Nat. Photonics (2023).https://www.nature.com/articles/s41566-023-01274-1