Low Yield of Near-Zero-Momentum Electrons and Partial Atomic Stabilization in Strong-Field Tunneling Ionization

Liu, Hong; Liu, Yunquan; Fu, Libin; Xin, Guoguo; Ye, Difa; Liu, Jie; He, X. T.; Yang, Yudong; Liu, Xianrong; Deng, Yongkai; Wu, Chengyin; Gong, Qihuang

doi:10.1103/physrevlett.109.093001

Cited by 99 publications

(67 citation statements)

References 39 publications

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“…The phenomenon can be attributed to the high-excited Rydberg states which are deeply involved in the meV photoelectron generation. When the field frequency is larger than the frequency of the classical orbit of the Rydberg state, the electrons pumped into the Rydberg states become stabilized against ionization3334. This effect can reduce the meV electron accumulation.…”

Section: Resultsmentioning

confidence: 99%

Momentum Distribution of Near-Zero-Energy Photoelectrons in the Strong-Field Tunneling Ionization in the Long Wavelength Limit

Xia

et al. 2015

Sci Rep

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We investigate the ionization dynamics of Argon atoms irradiated by an ultrashort intense laser of a wavelength up to 3100 nm, addressing the momentum distribution of the photoelectrons with near-zero-energy. We find a surprising accumulation in the momentum distribution corresponding to meV energy and a “V”-like structure at the slightly larger transverse momenta. Semiclassical simulations indicate the crucial role of the Coulomb attraction between the escaping electron and the remaining ion at an extremely large distance. Tracing back classical trajectories, we find the tunneling electrons born in a certain window of the field phase and transverse velocity are responsible for the striking accumulation. Our theoretical results are consistent with recent meV-resolved high-precision measurements.

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Section: Resultsmentioning

confidence: 99%

Momentum Distribution of Near-Zero-Energy Photoelectrons in the Strong-Field Tunneling Ionization in the Long Wavelength Limit

Xia

et al. 2015

Sci Rep

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“…Recent experiments, however, have found that a significant amount of atoms can survive after the laser pulse, showing the phenomenon of tunneling without ionization [21,22]. More recently, the concept of partial atomic stabilization in tunneling ionization has been discussed [23]. The above investigations indicate that the neutral atoms or molecules might be effectively accelerated in laser fields.…”

Section: Introductionmentioning

confidence: 93%

Classical-trajectory simulation of accelerating neutral atoms with polarized intense laser pulses

Xia

Liu

2013

Phys. Rev. A

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In the present paper, we perform the classical trajectory Monte Carlo simulation of the complex dynamics of accelerating neutral atoms with linearly or circularly polarized intense laser pulses. Our simulations involve the ion motion as well as the tunneling ionization and the scattering dynamics of valence electron in the combined Coulomb and electromagnetic fields, for both helium (He) and magnesium (Mg). We show that for He atoms, only linearly polarized lasers can effectively accelerate the atoms, while for Mg atoms, we find that both linearly and circularly polarized lasers can successively accelerate the atoms. The underlying mechanism is discussed and the subcycle dynamics of accelerating trajectories is investigated. We have compared our theoretical results with a recent experiment [Eichmann Nature (London) 461, 1261 (2009)].

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“…In a recent publication Liu et al 19 report opposing experimental findings: they observe low yield of low kinetic energy electrons from strong-field ionization of krypton and xenon atoms using 1320 nm light and at similar pulse peak intensity as in the previously cited experimental papers. The authors attribute their contradicting observations to population trapping in high-lying (Rydberg) states as suppression mechanism.…”

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confidence: 88%

Ionization with low-frequency fields in the tunneling regime

Durá

Camus

Thai

et al. 2013

Sci Rep

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Strong-field ionisation surprises with richness beyond current understanding despite decade long investigations. Ionisation with mid-IR light has promptly revealed unexpected kinetic energy structures that seem related to unanticipated quantum trajectories of the electrons. We measure first 3D momentum distributions in the deep tunneling regime (γ = 0.3) and observe surprising new electron dynamics of near-zero momentum electrons and extremely low momentum structures, below the eV, despite very high quiver energies of 95 eV. Such level of high-precision measurements at only 1 meV above the threshold, despite 5 orders higher ponderomotive energies, has now become possible with a specifically developed ultrafast mid-IR light source in combination with a reaction microscope, thereby permitting a new level of investigations into mid-IR recollision physics.

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Low Yield of Near-Zero-Momentum Electrons and Partial Atomic Stabilization in Strong-Field Tunneling Ionization

Cited by 99 publications

References 39 publications

Momentum Distribution of Near-Zero-Energy Photoelectrons in the Strong-Field Tunneling Ionization in the Long Wavelength Limit

Momentum Distribution of Near-Zero-Energy Photoelectrons in the Strong-Field Tunneling Ionization in the Long Wavelength Limit

Classical-trajectory simulation of accelerating neutral atoms with polarized intense laser pulses

Ionization with low-frequency fields in the tunneling regime

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