Attosecond dynamics of core excitons

Giacomo Inzani; Shunsuke A. Sato; Giacinto D. Lucarelli; Bruno Moio; Rocio Borrego-Varillas; Fabio Frassetto; Luca Poletto; Hannes Hübener; Umberto De Giovannini; Angel Rubio; Mauro Nisoli; Matteo Lucchini

doi:10.1117/12.2631081

31 May 2022 Attosecond dynamics of core excitons

Giacomo Inzani, Shunsuke A. Sato, Giacinto D. Lucarelli, Bruno Moio, Rocio Borrego-Varillas, Fabio Frassetto, Luca Poletto, Hannes Hübener, Umberto De Giovannini, Angel Rubio, Mauro Nisoli, Matteo Lucchini

Author Affiliations +

Proceedings Volume 12132, Advances in Ultrafast Condensed Phase Physics III; 1213202 (2022) https://doi.org/10.1117/12.2631081
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Excitons, quasi-particles generated by the Coulomb interaction between an excited electron and a hole, have been proposed as a possibility to overcome the limits of electronics. To fully exploit them, a deeper understanding of their interaction with light is required. In this study, the interaction of a core exciton with an intense, few-femtosecond infrared pulse is investigated with attosecond transient reflection spectroscopy in a bulk monocrystalline MgF₂ sample. The distinct few- and sub-femtosecond optical responses attest the dual, atomic- and solid-like, nature of core excitons. Sub-femtosecond dynamics, in particular, are dictated by the interplay between the exciton and the conduction band of the crystal. Theoretical simulations allow to propose the exciton binding energy as a lever to control exciton dynamics on an ultrafast timescale.

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Citation Download Citation

Giacomo Inzani, Shunsuke A. Sato, Giacinto D. Lucarelli, Bruno Moio, Rocio Borrego-Varillas, Fabio Frassetto, Luca Poletto, Hannes Hübener, Umberto De Giovannini, Angel Rubio, Mauro Nisoli, and Matteo Lucchini "Attosecond dynamics of core excitons", Proc. SPIE 12132, Advances in Ultrafast Condensed Phase Physics III, 1213202 (31 May 2022); https://doi.org/10.1117/12.2631081

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