Dynamic interference as signature of atomic stabilization

Jiang, Wei-Chao; Burgdörfer, Joachim

doi:10.1364/oe.26.019921

Cited by 38 publications

(56 citation statements)

References 47 publications

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“…However, the single peak can gradually evolve into a multi-peak structure due to the dynamic interference when the laser intensity is increased. The condi-tions to observe such a dynamic interference are recently discussed [13,15]. In fact, to observe the dynamic interference in the ground state of hydrogen at a moderately high laser frequency (∼50 eV), the peak intensity needs to be high enough (above 10 18 W/cm 2 ) for the atomic stabilization to occur [15].…”

Section: Introductionmentioning

confidence: 99%

“…The condi-tions to observe such a dynamic interference are recently discussed [13,15]. In fact, to observe the dynamic interference in the ground state of hydrogen at a moderately high laser frequency (∼50 eV), the peak intensity needs to be high enough (above 10 18 W/cm 2 ) for the atomic stabilization to occur [15]. The relative theoretical studies are presently limited to the dipole approximation for the laser-atom interaction.…”

Section: Introductionmentioning

confidence: 99%

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Nondipole effects in atomic dynamic interference

et al. 2018

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Nondipole effects in the atomic dynamic interference are investigated by numerically solving the time-dependent Schrödinger equation (TDSE) of hydrogen. It is found that the inclusion of nondipole corrections in the TDSE can induce momentum shifts of photoelectrons in the opposite direction of the laser propagation. The magnitude of the momentum shift is roughly proportional to the laser peak intensity and to the momentum component of the photoelectron along the laser propagation. By including the nondipole corrections of the Volkov phase into a semi-analytical model previously developed under the dipole approximation, all the main features of the momentum shifts can be nicely reproduced. Through an analytic expression, the origin of such momentum shifts is attributed to the nondipole phase difference between the two electron wave packets ejected in the rising edge and the falling edge, which will interfere with each other and result in the final fringe pattern. One important consequence of such momentum shifts is that they can smooth out the peak splitting induced by the dynamic interference in the photoelectron energy spectrum. Nevertheless, it should be emphasized that the dynamic interference persists in the photoelectron momentum distributions and is not suppressed at all for the laser parameters considered in this work.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nondipole effects in atomic dynamic interference

et al. 2018

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“…A közelmúltban több kutatócsoport tagjai is rámutattak arra, hogy erős lézertérbe helyezett atomok és molekulák fotoelektron spektrumában egy küszöb lézer intenzitás felett az intenzitás növelésével a spektrumbeli csúcsok újfajta, egyre gazdagodó struktúrát mutatnak [1][2][3][4][5][6]. Az egyszerű fotocsúcsokon megjelenő interferencia mintázatért az alkalmazott lézerpulzus felszálló és leszálló ágában ionizált elektronok interferenciája a felelős [2].…”

Section: Bevezetésunclassified

“…A dinamikus interferenciát a keletkezés mechanizmusa szerint két alapvető csoportra oszthatjuk: i) direkt egyfotonos ionizációban (ℏω > I p ) létrejövő [1][2][3][4], valamint ii) köztes rezonáns állapotokon keresztül végbemenő (ℏω < I p ) ionizáció során keletkező dinamikus interferenciát [5][6] különböztethetünk meg. Az utóbbi esetben legalább két foton szükséges a rendszer ionizációjához.…”

Section: Bevezetésunclassified

Többfotonos rezonancia-fokozott ionizációban kilépő elektronok dinamikus interferenciája

Szabó

Csehi

2021

Kvantumelektronika 2021

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“…Morales et al identified specific fine structures in photoelectron momentum distribution contributed by excited KH states [22]. Jiang et al suggested that the photoelectron momentum distribution carrying dynamical interference structures provides information on adiabatic stabilization [23]. However, these proposals are sensitive either to the laser intensity or to the pulse envelope and are not robust against ionization depletion.…”

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confidence: 99%

Robust Strategies for Affirming Kramers-Henneberger Atoms

He¹,

Zhang²,

He³

2019

Preprint

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Atoms exposed to high-frequency strong laser fields experience the ionization suppression due to the deformation of Kramers-Henneberger (KH) wave functions, which has not been confirmed yet in any experiment. We propose a bichromatic pump-probe strategy to affirm the existence of KH states, which is formed by the pump pulse and ionized by the probe pulse. In the case of the single-photon ionization triggered by a vacuum ultra-violet probe pulse, the double-slit character of KH atom is mapped to the photoelectron momentum distribution. In the case of the tunneling ionization induced by an infrared probe pulse, streaking in anisotropic Coulomb potential gives rise to the rotation of the photoelectron momentum distribution in the laser polarization plane. Apart from bichromatic schemes, the non-Abelian geometric phase provides an alternative route to affirm the existence of KH states. Following specific loops in laser parameter space, a complete spin flipping transition could be achieved. Our proposal has advantages of being robust against focal-intensity average as well as ionization depletion, and is accessible with current laser facilities.

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Dynamic interference as signature of atomic stabilization

Cited by 38 publications

References 47 publications

Nondipole effects in atomic dynamic interference

Nondipole effects in atomic dynamic interference

Többfotonos rezonancia-fokozott ionizációban kilépő elektronok dinamikus interferenciája

Robust Strategies for Affirming Kramers-Henneberger Atoms

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