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Real-Time Observation of Electron-Hole Coherence Induced by Strong-Field Ionization

Authors :
Jing Zhao
Jinlei Liu
Xiaowei Wang
Jianmin Yuan
Zengxiu Zhao
Source :
Chinese Physics Letters. 39:123201
Publication Year :
2022
Publisher :
IOP Publishing, 2022.

Abstract

We introduce and demonstrate a new approach to measure the electron-hole dynamics and coherence induced by strong-field ionization using hole-assisted high-harmonic spectroscopy. The coherent driving of the infrared and XUV pulses correlates the dynamics of the core-hole and the valence-hole by coupling multiple continua, which leads to the otherwise forbidden absorption and emission of high harmonics. An analytical model is developed based on the strong-field approximation by taking into account the essential multielectron configurations. The emission spectra from the core-valence transition and the core-hole recombination are found to modulate strongly as functions of the time delay between the two pulses, suggesting that the coherent electron wave packets in multiple continua can be utilized to temporally resolve the core-valence transition in attoseconds.

Subjects

Subjects :
General Physics and Astronomy

Details

ISSN :
17413540 and 0256307X
Volume :
39
Database :
OpenAIRE
Journal :
Chinese Physics Letters
Accession number :
edsair.doi...........4239a55ff755daa51e1ad55b586925b6
Full Text :
https://doi.org/10.1088/0256-307x/39/12/123201