Tracking ultrafast solid-state dynamics using high harmonic spectroscopy
| Autor: | Bionta, Mina R., Haddad, Elissa, Leblanc, Adrien, Gruson, Vincent, Lassonde, Philippe, Ibrahim, Heide, Chaillou, Jérémie, Émond, Nicolas, Otto, Martin R., Siwick, Bradley J., Chaker, Mohamed, Légaré, François |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. Research 3, 023250 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.3.023250 |
| Popis: | We establish time-resolved high harmonic generation (tr-HHG) as a powerful spectroscopy for photoinduced dynamics in strongly correlated materials through a detailed investigation of the insulator-to-metal transitions in vanadium dioxide. We benchmark our technique by comparing our measurements to established momentum-resolved ultrafast electron diffraction, and theoretical density functional calculations. Tr-HHG allows distinguishing of individual dynamic channels, including a transition to a thermodynamically hidden phase. In addition, the HHG yield is shown to be modulated at a frequency characteristic of a coherent phonon in the equilibrium monoclinic phase over a wide range of excitation fluences. These results demonstrate that tr-HHG is capable of tracking complex dynamics in solids through its sensitivity to the band structure. Comment: 20 pages and 4 figures main text, 8 pages and 4 figures supplementary information |
| Databáze: | arXiv |
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