Tracking ultrafast solid-state dynamics using high harmonic spectroscopy
نویسندگان
چکیده
We establish time-resolved high harmonic generation (tr-HHG) as a powerful spectroscopy for photoinduced dynamics in strongly correlated materials through detailed investigation of the insulator-to-metal transitions vanadium dioxide. benchmark our technique by comparing measurements to established momentum-resolved ultrafast electron diffraction, and theoretical density functional calculations. Tr-HHG allows distinguishing individual dynamic channels, including transition thermodynamically hidden phase. In addition, HHG yield is shown be modulated at frequency characteristic coherent phonon equilibrium monoclinic phase over wide range excitation fluences. These results demonstrate that tr-HHG capable tracking complex solids its sensitivity band structure.
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ژورنال
عنوان ژورنال: Physical review research
سال: 2021
ISSN: ['2643-1564']
DOI: https://doi.org/10.1103/physrevresearch.3.023250