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Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule
- Ultrafast Science Vol. 2, Issue 2, (2022)
- Affiliations：
a State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-Optoelectronics, School of Physics, Peking University, Beijing 100871, Chinab Collaborative Innovation Center of Quantum Matter, Beijing 100871, Chinac Collaborative Innovation Center of Extreme Optics, Shanxi University,Shanxi,Taiyuan,China,030006
- Author bio：
- Funds：This work is supported by the National Science Foundation of China (Grant Nos. 92050201, 11774013, and 11527901).
DOI：10.34133/2022/9802917
CLC：Published：2022，
- Accepted：
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Zhenning Guo, Peipei Ge, Yiqi Fang, Yankun Dou, Xiaoyang Yu, Jiguo Wang, Qihuang Gong, Yunquan Liu. 2022: Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule. 超快科学, 2022(2).
Zhenning Guo, Peipei Ge, Yiqi Fang, Yankun Dou, Xiaoyang Yu, Jiguo Wang, Qihuang Gong, Yunquan Liu. 2022: Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule. Ultrafast Science, 2022(2).
Zhenning Guo, Peipei Ge, Yiqi Fang, Yankun Dou, Xiaoyang Yu, Jiguo Wang, Qihuang Gong, Yunquan Liu. 2022: Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule. 超快科学, 2022(2). DOI： 10.34133/2022/9802917
Zhenning Guo, Peipei Ge, Yiqi Fang, Yankun Dou, Xiaoyang Yu, Jiguo Wang, Qihuang Gong, Yunquan Liu. 2022: Probing Molecular Frame Wigner Time Delay and Electron Wavepacket Phase Structure of CO Molecule. Ultrafast Science, 2022(2). DOI： 10.34133/2022/9802917
摘要
The time delay of photoelectron emission serves as a fundamental building block to understand the ultrafast electron emission dynamics in strong-field physics. Here
we study the photoelectron angular streaking of CO molecules by using two-color ( 400+800nm) corotating circularly polarized fields. By coincidently measuring photoelectrons with the dissociative ions
we present molecular frame photoelectron angular distributions with respect to the instantaneous driving electric field signatures. We develop a semiclassical nonadiabatic molecular quantum-trajectory Monte Carlo (MO-QTMC) model that fully captures the experimental observations and further ab initio simulations. We disentangle the orientation-resolved contribution of the anisotropic ionic potential and the molecular orbital structure on the measured photoelectron angular distributions. Furthermore
by analyzing the photoelectron interference patterns
we extract the sub-Coulomb-barrier phase distribution of the photoelectron wavepacket and reconstruct the orientation- and energy-resolved Wigner time delay in the molecular frame. Holographic angular streaking with bicircular fields can be used for probing polyatomic molecules in the future.
Abstract
The time delay of photoelectron emission serves as a fundamental building block to understand the ultrafast electron emission dynamics in strong-field physics. Here
we study the photoelectron angular streaking of CO molecules by using two-color ( 400+800nm) corotating circularly polarized fields. By coincidently measuring photoelectrons with the dissociative ions
we present molecular frame photoelectron angular distributions with respect to the instantaneous driving electric field signatures. We develop a semiclassical nonadiabatic molecular quantum-trajectory Monte Carlo (MO-QTMC) model that fully captures the experimental observations and further ab initio simulations. We disentangle the orientation-resolved contribution of the anisotropic ionic potential and the molecular orbital structure on the measured photoelectron angular distributions. Furthermore
by analyzing the photoelectron interference patterns
we extract the sub-Coulomb-barrier phase distribution of the photoelectron wavepacket and reconstruct the orientation- and energy-resolved Wigner time delay in the molecular frame. Holographic angular streaking with bicircular fields can be used for probing polyatomic molecules in the future.
关键词
Strong-field ionization Molecular strong-field approximation Molecular-frame photoelectron angular distributions Holographic angular streaking scheme Wigner time delay
Keywords
Strong-field ionization Molecular strong-field approximation Molecular-frame photoelectron angular distributions Holographic angular streaking scheme Wigner time delay
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