Jinlei Liu

Internuclear-distance dependence of photoionization time delay in CO

Guang-Ru Bai, Bin Zhang, Yan Yang, Yue Lang et autres

Photoionization time delay in atoms and molecules is a fundamental phenomenon in attosecond physics, encoding essential information about electronic structure and dynamics. Compared with atoms, molecules exhibit anisotropic potentials and additional nuclear degrees of freedom, which make the interpretation of molecular photoionization …

Electronic-vibrational dynamics and coherence in x-ray transient absorption of N 2 + induced by strong-field ionization

Jing Zhao, Guangru Bai, Qian Zhang, Bin Zhang et autres

Attosecond transient absorption spectroscopy (ATAS) is becoming an indispensable and powerful tool in the emerging field of attochemistry, while the interpretation of measurements often requires full considerations of the coupling among various freedoms of motion. Here we develop the ionization-coupling model to …

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Dynamical channel coupling in strong-field ionization of CO 2

Yalei Zhu, Zeyu Jiang, Zhongxue Ren, Guangru Bai et autres

We present a theoretical study employing the time-dependent density functional theory (TDDFT) to explore the effects of angle-resolved channel coupling in strong field ionization of carbon dioxide (CO 2 ) molecules. Our results reveal significant angular sensitivity of both the channel-resolved ionization …

Coherent emission and attosecond transient absorption of N+2 in strong fields

Qian Zhang, Guangru Bai, Bin Zhang, Jinlei Liu et autres

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Coherent XUV super continuum emission from atomic bound states

Jing Zhao, Xiaowei Wang, Li Wang, Jiacan Wang et autres

Coherent supercontinuum radiation in the extreme-ultraviolet (XUV) range is indispensable for synthesizing attosecond light pulses and for exploring transient atomic structures. Here, we report the striking observations of coherent XUV supercontinuum (XSC) extended from below to far above the ionization threshold, which …

SLIMP 2.0: A new version of strong laser interaction model package for atoms and molecules, now with molecular orbital tomography based on high-order harmonic spectra

Zhongxue Ren, Bin Zhang, Yan Yang, Yalei Zhu et autres

A new version of strong laser interaction model package for atoms and molecules is presented. Its capacities are enhanced by incorporating modules related to molecular orbital tomography (MOT) in length and velocity forms based on high-order harmonic spectra (HHS). This advanced package …

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Raman time-delay in attosecond transient absorption of strong-field created krypton vacancy

Li Wang, Guangru Bai, Xiaowei Wang, Jing Zhao et autres

Strong field ionization injects a transient vacancy in the atom which is entangled to the outgoing photoelectron. When the electron is finally detached, the ion is populated at different excited states with part of coherence information lost. The preserved coherence of matter …

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Strong Field Ionization Dynamics Resolved by Two-Color Elliptical Phase-of-Phase Spectroscopy

Wuwei Jin, Tao Jiang, Jinlei Liu, Sizuo Luo et autres

We investigate the strong field ionization of argon using counter-rotating 2-color dual-elliptical phase-of-phase spectroscopy. We perform a multidimensional control experiment over the 2-color dual-elliptical laser field to modulate the photoelectron momentum spectra generated under strong fields. Incorporating the classical trajectory Monte Carlo …

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Ultrashort Isolated Attosecond Pulse Generation with 750-nm Free-Carrier Envelope Phase Near-Infrared Pulses

Xiaowei Wang, Fan Xiao, Jiacan Wang, Li Wang et autres

Ultrashort laser pulses can serve as fast probes to record instant events. The isolated attosecond pulses (IAPs) generated from high-order harmonic generation (HHG) have been shortened down to about 2 atomic units in time, empowering us to study quantum behaviors of electrons …

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Quantum radiation and absorption by current fluctuations of atoms in strong laser fields

Zhao-Yang Peng, Huayu Hu, Jianpeng Liu, Jinlei Liu et autres

The radiation and absorption responses of atoms in strong laser fields for quantum probes are studied using the strong-field quantum optical method. It was shown that the emission and absorption are related, respectively, to the positive and negative frequencies of the current's …

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Twin-Capture Rydberg State Excitation Enhanced with Few-Cycle Laser Pulses

Jing Zhao, Jinlei Liu, Xiaowei Wang, Zengxiu Zhao

Quantum excitation is usually regarded as a transient process occurring instantaneously, leaving the underlying physics shrouded in mystery. Recent research shows that Rydberg-state excitation with ultrashort laser pulses can be investigated and manipulated with state-of-the-art few-cycle pulses. We theoretically find that the …

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Raman time-delay in attosecond transient absorption of strong-field created Krypton vacancy

Zengxiu Zhao, Xiaowei Wang, Li Wang, Guangru Bai et autres

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