Tunnel Ionization Of Complex Atoms And Atomic Ions In Electromagnetic Field

Ammosov, M. V.; Delone, N. B.; Крайнов, В. П.

doi:10.1117/12.938695

Cited by 1,176 publications

(1,572 citation statements)

References 0 publications

Supporting

Mentioning

1,528

Contrasting

Unclassified

Order By: Relevance

“…[17] Recent experiments show that strongfield ionization does not exclusively prepare the ground state of the cation [4][5][6]28] but that excited states can also be populated. The probability of accessing a certain ionic state is exponentially sensitive to I p [29] but also to the shape of orbitals, [30] which can enhance the contribution of a deeply bound orbital. When ionization accesses two states of the ion and the laser-induced dynamics in the ion is neglected, highharmonic generation has two contributions…”

Section: Probing Electronic Dynamicsmentioning

confidence: 99%

High-Harmonic Spectroscopy: From Femtosecond to Attosecond Molecular Dynamics

Wörner

2011

Chimia

View full text Add to dashboard Cite

The principles of high-harmonic spectroscopy (HHS) are illustrated using two recent examples from the literature. The method can be applied as a probe to measure the evolution of the electronic structure of a molecule during a chemical reaction on the femtosecond time scale. Alternatively, it can be used as a comprehensive method unifying pump and probe steps into a single laser cycle to measure electronic dynamics on the at to second time scale.

show abstract

Section: Probing Electronic Dynamicsmentioning

confidence: 99%

High-Harmonic Spectroscopy: From Femtosecond to Attosecond Molecular Dynamics

Wörner

2011

Chimia

View full text Add to dashboard Cite

show abstract

“…Next, aside from the present DFR mechanism pertinent to a multiphoton process, it should be noted that there exists another mechanism for tunneling ionization (TI) [56] that possibly makes the DL unstable in the low-ω (low-F 0 ) region. TI is believed to be dominant in the region where γ < 1, where the Keldysh parameter γ is defined as…”

Section: E Criteria For Applicability Of Dfrmentioning

confidence: 99%

Instability of dynamic localization in the intense terahertz-driven semiconductor Wannier-Stark ladder due to the dynamic Fano resonance

et al. 2010

View full text Add to dashboard Cite

The lifetime of an electronic Floquet state in a semiconductor Wannier-Stark ladder (WSL) driven by an intense monochromatic THz wave is examined based on the R-matrix Floquet theory, in which an excess density of state (DOS) corresponding to the lifetime is calculated. It is revealed that the dynamic localization (DL) characteristic of this system is unstable against Fano resonance (FR)-like inter-miniband decay mechanism caused by THz-mediated ac-Zener tunneling; in this study, this is termed as dynamic Fano resonance (DFR). The DFR is considered to be a new FR mechanism characterized by both tunable ac-ZT coupling and coexistence with shape resonance.The result obtained here is in sharp contrast with the conventional understanding without the introduction of DFR, in which the DL is very stable such that its lifetime is comparable to or greater than that of the associated WSL. It is found that the DFR mechanism generally becomes more dominant with an increase in the strength of the bias field. Further, we discuss the observation that the spectral pattern of the excess DOS is more involved for a single-photon resonant transition, namely, Ω = ω, than that for a two-photon resonant transition, namely, Ω = 2ω, where Ω and ω represent a Bloch frequency and a THz frequency, respectively. In addition, the criterion for the applicability of the DFR to the present system is also obtained.

show abstract

“…where E ω denotes the analytic signal of the electric field EðtÞ in the frequency domain, the free electron currentĴ is governed by the Drude model and a rate equation for the instantaneous electron density according to the widely used tunnel ionization model of Ammosov, Delone, and Krainov [43] for crystals, g is the fractional contribution of the Raman delayed nonlinearity, ∘ denotes the convolution integral, h R ðtÞ is the Raman kernel, and βðωÞ ¼ ωn 0 ðωÞ=c is the propagation constant related to the refractive index n 0 ðωÞ of bulk fused silica [44]. For the numerical solution of Eq.…”

mentioning

confidence: 99%

Regularizing Aperiodic Cycles of Resonant Radiation in Filament Light Bullets

et al. 2017

View full text Add to dashboard Cite

We demonstrate an up to now unrecognized and very effective mechanism which prevents filament collapse and allows persistent self-guiding propagation retaining a large portion of the optical energy on axis over unexpected long distances. The key ingredient is the possibility of continuously leaking energy into the normal dispersion regime via the emission of resonant radiation. The frequency of the radiation is determined by the dispersion dynamically modified by photogenerated plasma, thus allowing us to excite new frequencies in spectral ranges which are otherwise difficult to access.

show abstract

Tunnel Ionization Of Complex Atoms And Atomic Ions In Electromagnetic Field

Cited by 1,176 publications

References 0 publications

High-Harmonic Spectroscopy: From Femtosecond to Attosecond Molecular Dynamics

High-Harmonic Spectroscopy: From Femtosecond to Attosecond Molecular Dynamics

Instability of dynamic localization in the intense terahertz-driven semiconductor Wannier-Stark ladder due to the dynamic Fano resonance

Regularizing Aperiodic Cycles of Resonant Radiation in Filament Light Bullets

Contact Info

Product

Resources

About