Exploration of laser-driven electron-multirescattering dynamics in high-order harmonic generation

Li, Peng -Cheng; Sheu, Yae -Lin; Jooya, Hossein Z.; Zhou, Xiao -Xin; Chu, Shih -I

doi:10.1038/srep32763

Exploration of laser-driven electron-multirescattering dynamics in high-order harmonic generation

Journal Article · Tue Sep 06 00:00:00 EDT 2016 · Scientific Reports

DOI:https://doi.org/10.1038/srep32763· OSTI ID:1378370

Li, Peng -Cheng ^[1]; Sheu, Yae -Lin ^[2]; Jooya, Hossein Z. ^[3]; Zhou, Xiao -Xin ^[4]; Chu, Shih -I ^[5]

Northwest Normal Univ., Lanzhou (China); National Taiwan Univ., Taipei (Taiwan); Univ. of Kansas, Lawrence, KS (United States)
National Taiwan Univ., Taipei (Taiwan)
Univ. of Kansas, Lawrence, KS (United States)
Northwest Normal Univ., Lanzhou (China)
National Taiwan Univ., Taipei (Taiwan); Univ. of Kansas, Lawrence, KS (United States)

Multiple rescattering processes play an important role in high-order harmonic generation (HHG) in an intense laser field. However, the underlying multi-rescattering dynamics are still largely unexplored. Here we investigate the dynamical origin of multiple rescattering processes in HHG associated with the odd and even number of returning times of the electron to the parent ion. We perform fully ab initio quantum calculations and extend the empirical mode decomposition method to extract the individual multiple scattering contributions in HHG. We find that the tunneling ionization regime is responsible for the odd number times of rescattering and the corresponding short trajectories are dominant. On the other hand, the multiphoton ionization regime is responsible for the even number times of rescattering and the corresponding long trajectories are dominant. Moreover, we discover that the multiphoton- and tunneling-ionization regimes in multiple rescattering processes occur alternatively. Our results uncover the dynamical origin of multiple rescattering processes in HHG for the first time. As a result, it also provides new insight regarding the control of the multiple rescattering processes for the optimal generation of ultrabroad band supercontinuum spectra and the production of single ultrashort attosecond laser pulse.

View Accepted Manuscript (DOE)

Research Organization:: University of Kansas, Lawrence, KS (United States). Dept. of Chemistry

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI ID:: 1378370

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 6; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Potential energy surfaces for electron dynamics modeled by floating and breathing Gaussian wave packets with valence-bond spin-coupling: An analysis of high-harmonic generation spectrum Ando, Koji The Journal of Chemical Physics, Vol. 148, Issue 9 https://doi.org/10.1063/1.5012575	journal	March 2018
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Application of optimized waveforms for enhancing high-harmonic yields in a three-color laser-field synthesizer Li, Xiaoyong; Fan, Juan; Ma, Jinyu Optics Express, Vol. 27, Issue 2 https://doi.org/10.1364/oe.27.000841	journal	January 2019
Potential energy surfaces for electron dynamics modeled by floating and breathing Gaussian wave packets with valence-bond spin-coupling: An analysis of high-harmonic generation spectrum Ando, Koji arXiv https://doi.org/10.48550/arxiv.1710.09104	text	January 2017

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