Probing the launching position of the electron wave packet in molecule strong-field tunneling ionization

Zhou, Yueming; Tan, Jia; Li, Min; Lu, Peixiang

doi:10.1007/s11433-020-1703-x

Cited by 13 publications

(4 citation statements)

References 51 publications

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“…If the field strength of laser field becomes comparable to the binding Coulomb force, the outermost electron of atoms or molecules can be released into the continuum via tunneling ionization. Subsequently, the tunneled electron may be pulled back by the oscillating laser electric field, and then scattered by the parent ion [1], resulting in all sorts of highly nonlinear phenomena, such as high harmonic generation (HHG) [2,3], above-threshold ionization (ATI) [4,5], nonsequential multiple ionization [6][7][8], and photoelectron holography [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of frustrated tunneling ionization driven by inhomogeneous laser fields

Zhou

et al. 2022

New J. Phys.

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We theoretically investigated frustrated tunneling ionization (FTI) driven by spatially inhomogeneous strong laser fields induced by surface plasmon resonance within a bow-tie metal nanostructure. The results show that the FTI probability and the principal quantum number distribution exhibit similar oscillatory behavior as a function of the pulse duration. Our analysis reveals that the periodic defocusing and refocusing of the electron spatial distribution due to the inhomogeneous laser field is responsible for the oscillatory structures. In addition, the initial tunneling coordinates and the angular momentum distributions of the FTI events and theirs pulse duration dependence are also explored. Moreover, our results show that the frequency of the oscillatory structures depends sensitively on the electron quiver amplitude and the inhomogeneity strength. Thus, the electron quiver amplitude and the size of the gap between the bow-tie nanostructure are useful and efficient knobs for controlling the yield and properties of exited Rydberg states.

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Section: Introductionmentioning

confidence: 99%

Dynamics of frustrated tunneling ionization driven by inhomogeneous laser fields

Zhou

et al. 2022

New J. Phys.

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“…[31] The rescattering process naturally provides access to both the structural information and the electronic dynamics of the atoms and molecules, and thus makes SFPH a practical photoelectron spectroscopy. [32][33][34] In our previous works, we extracted the inherent structural information, the phase of the scattering amplitude, from the holographic interference. [35,36] Very recently, we have demonstrated the real-time and in-situ observation of the ultrafast charge migration in molecules with attosecond temporal resolution using SFPH.…”

Section: Introductionmentioning

confidence: 99%

Taking snapshots of a moving electron wave packet in molecules using photoelectron holography in strong-field tunneling ionization*

Yang¹,

Zhou²,

Lu³

2021

Chinese Phys. B

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Coherent superposition of electronic states induces attosecond electron motion in molecules. We theoretically investigate the strong-field ionization of this superposition state by numerically solving the time-dependent Schrödinger equation. In the obtained photoelectron momentum distribution, an intriguing bifurcation structure appears in the strong-field holographic interference pattern. We demonstrate that this bifurcation structure directly provides complete information about the status of the transient wave function of the superposition state: the horizontal location of the bifurcation in the momentum distribution reveals the relative phase of the involved components of the superposition state and the vertical position indicates the relative coefficient. Thus, this bifurcation structure takes a snapshot of the transient electron wave packet of the superposition state and provides an intuitive way to monitor electron motion in molecules.

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“…This work takes a step toward understanding the TI process, which will help reveal the mechanisms of other nonlinear phenomena, such as high-order harmonic generation and nonsequential double ionization. Moreover, as Zhou et al [5] demonstrated, the tunneling wavepacket's displacement is closely related to the electron density distribution in molecules. Thus, PH has the potential to trace the attosecond charge migration in molecules, which is of essential importance for emerging attosecond chemistry.…”

mentioning

confidence: 96%

“…PH provides us an indirect tool to probe TI. Zhou et al [5] transfer the nonzero transverse displacement of the tunneling wavepacket from real to momentum space, thus enabling the tunneling exit to link to the phase change of the reference wave, which leads to the asymmetric PH pattern. Via mathematical models, they realized the accurate retrieval of the transverse tunneling exit by investigating the phase shift as a function of the transverse momentum.…”

mentioning

confidence: 99%

Photoelectron holography for tunneling ionization

Bian

2021

Sci. China Phys. Mech. Astron.

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Probing the launching position of the electron wave packet in molecule strong-field tunneling ionization

Cited by 13 publications

References 51 publications

Dynamics of frustrated tunneling ionization driven by inhomogeneous laser fields

Dynamics of frustrated tunneling ionization driven by inhomogeneous laser fields

Taking snapshots of a moving electron wave packet in molecules using photoelectron holography in strong-field tunneling ionization*

Photoelectron holography for tunneling ionization

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