Manipulating Nonsequential Double Ionization of Argon Atoms via Orthogonal Two-Color Field

Li, Yingbin; Qin, Lingling; Liu, Aihua; Zhang, Ke; Tang, Qun; Zhai, Chunyang; Xu, Jingshi; Chen, Shi; Yu, Benhai; Chen, Jing

doi:10.1088/0256-307x/39/9/093201

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…Li et al studied NSDI of Ar atoms using OTC laser fields with different wavelength combinations in the classical ensemble model, and found that changing the laser frequency in the OTC laser field can control the electron return probability and the direction of momentum of the doubly charged ions. [29] Gong et al used phase-controlled OTC laser pulses to study the time delay of photoelectron emission in strong-field ionization of Ar atoms. By controlling the relative phase, they were able to clearly distinguish the main peak and sideband peaks in the above-threshold ionization spectrum.…”

Section: Introductionmentioning

confidence: 99%

Manipulating the electron dynamics in the non-sequential double ionization process of Ar atoms by an orthogonal two-color laser field

Wang 王,

Qian 钱,

Sun 孙

et al. 2024

Chinese Phys. B

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Electron dynamics during non-sequential double ionization (NSDI) is one of the most attractive research orientations in laser-atom or molecule interaction field. Based on the classic 2D model, the NSDI process of argon atoms driven by a few-cycle orthogonal two-color (OTC) laser field composed of 800 and 400nm laser pulses is studied. By changing the relative phase of two laser pulses, a localized enhancement of NSDI yield is observed at 0.5π and 1.5π which could be attributed to a rapid and substantial increase in the number of electrons returning to the parent ion within extremely short time intervals at these specific phases. Through the analysis of the electron-electron momentum correlations within different time windows of NSDI events and the angular distributions of emitted electrons in different channels, we observed a more pronounced electron-electron correlation phenomenon in the recollision-induced ionization (RII) channel. This is attributed to the shorter delay time in the RII channel.

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Section: Introductionmentioning

confidence: 99%

Manipulating the electron dynamics in the non-sequential double ionization process of Ar atoms by an orthogonal two-color laser field

Wang 王,

Qian 钱,

Sun 孙

et al. 2024

Chinese Phys. B

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“…[24,25] More intriguingly, experimental and theoretical studies have revealed that a strong dependence between the electron correlation characteristics and the relative initial phase of the OTC electric field. [26][27][28] In this paper, we conduct a theoretical investigation into the double ionization of neon atom in the OTC electric field using the semiclassical ensemble model. Our focus lies on the momentum distribution, which we examine by introducing a relative initial phase of 0.5π and varying the relative amplitude of the OTC electric field to explore the correlation characteristics of recolliding electrons in NSDI.…”

Section: Introductionmentioning

confidence: 99%

Steering the energy sharing of electrons in nonsequential double ionization with orthogonally polarized two-color field

Fan 樊,

Yang 杨,

Sun 孙

et al. 2024

Chinese Phys. B

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Using the semiclassical ensemble model, the dependence of relative amplitude for the recollision dynamics in nonsequential double ionization (NSDI) of neon atom driven by the orthogonally polarized two-color field (OTC) laser field was theoretically studied. And the dynamics in two typical collision pathways, recollision-impact-ionization (RII) and recollision-excitation with subsequent ionization (RESI) is systematically explored. Our results reveal that the V-shaped structure in the correlated momentum distribution is mainly caused by the RII mechanism when relative amplitude of OTC laser field is zero, and the first ionized electrons will quickly skim through the nucleus and share few energy with the second electron. As the relative amplitude increases, the V-shaped structure gradually disappears and electrons are concentrated on the diagonal in the electron correlation spectrum indicating that the energy sharing after electrons collision is symmetric for OTC laser fields with large relative amplitudes. Our studies show that changing the relative amplitude of the OTC laser field can efficiently control the electron-electron collisions and energy exchange efficiency of the NSDI process.

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“…The interaction between laser and matter is highly nonlinear under certain physical conditions, and many new physical phenomena are produced. Such as high-order above-threshold ionization (HATI) [1], high harmonic generation (HHG) [2][3][4], nonsequential double ionization(NSDI) [5][6][7][8][9][10][11][12], etc. These phenomena can be understood with a three-step recollision mode [13].…”

Section: Introductionmentioning

confidence: 99%

Electron dynamics of molecular frustrated double ionization driven by strong laser fields*

Tang

Shi

Zhang

et al. 2023

Commun. Theor. Phys.

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We theoretically investigate the frustrated double ionization (FDI) of molecules with different alignment-dependence using a three-dimensional classical ensemble method. The numerical results show that the FDI probability decreases with increasing wavelength, which is similar to the wavelength dependence of the FDI probability of atoms. Tracing the classical trajectories reveals that the contributions to molecular FDI from single-recollision and multiple-recollision mechanisms are equal in the short wavelength regime. In the long wavelength regime, the single-recollision FDI channel dominates in FDI. The nature in which molecular FDI occurs is identified and explained.

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Manipulating Nonsequential Double Ionization of Argon Atoms via Orthogonal Two-Color Field

Cited by 7 publications

References 47 publications

Manipulating the electron dynamics in the non-sequential double ionization process of Ar atoms by an orthogonal two-color laser field

Manipulating the electron dynamics in the non-sequential double ionization process of Ar atoms by an orthogonal two-color laser field

Steering the energy sharing of electrons in nonsequential double ionization with orthogonally polarized two-color field

Electron dynamics of molecular frustrated double ionization driven by strong laser fields*

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