Ellipticity dependence of neutral Rydberg excitation of atoms in strong laser fields

Zhao, Lei; Dong, Jingwei; Lv, Hang; Yang, Tianxiang; Liu, Yi; Mu, Jin; Xu, Haifeng; Ding, Dajun; Hu, Shiqiang; Chen, Jing

doi:10.1103/physreva.94.053403

Cited by 27 publications

(21 citation statements)

References 37 publications

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“…It is interesting to see that all the ellipticity-dependence curves are almost the same with each other. Unlike the results in the 800 nm laser field [16], the elliptical dependence of RSE in the 400 nm laser field is irrelevant to the ionization potential and atom molecule species. As mentioned above, the multi-photon resonance between the ground state and a group of excited (Rydberg) states contributes to Rydberg state excitation at 400 nm in this laser intensity range.…”

Section: Dependence Of the Direct Ionization And Rse Yield On Laser Econtrasting

confidence: 63%

“…In the 800 nm laser field, the yield of RSE strongly depends on the laser ellipticity. The decline of the RSE yield with increasing ellipticity can be attributed to a decrease of electrons with low kinetic energy that could be captured in the Rydberg states by the Coulomb potential [16]. Completely different ellipticity dependence is observed for RSE in the 400 nm laser fields.…”

Section: Dependence Of the Direct Ionization And Rse Yield On Laser Ementioning

confidence: 93%

“…The experiment setup used for strong-field ionization and excitation of atoms and molecules was similar to that described in our previous studies [16,24,25]. Briefly, a gaseous sample was introduced to the reaction zone through a leak valve with an aperture of 10 µm.…”

Section: Experiments Setupmentioning

confidence: 99%

“…Both Freeman resonance [32] (via multiphoton absorption [21,33]) and frustrated tunneling ionization (FTI) [5] (or recapture [4] ) mechanisms have been attributed to explain the strong field RSE process in the tunneling ionization regime. A recent study indicates that the RSE is formed by capturing ionized electrons with low kinetic energy (E<0.4eV) into Rydberg states by the ionic Coulomb potential at the end of the laser field [16]. In the MPI regime, however, most ionized electrons could have higher kinetic energy, making it hard to be captured into the Rydberg states by the Coulomb potential of ions.…”

Section: Dependence Of the Direct Ionization And Rse On Laser Intensitymentioning

confidence: 99%

“…On the other hand, a recent study indicates that the strong dependence of atomic RSE on laser ellipticity could not be explained in the framework of the tunneling-plus-rescattering scenario (as in HHG or NSDI). Instead, the yield of electrons with low kinetic energy decreases along with the laser ellipticity increasing, that leads to the reduction of the probability of the tunneled electron to be captured into the Rydberg states by the Coulomb potential [16], indicating the possible correlation between the RSE process and the low-energy structure in ATI in the strong laser fields [17] .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Excitation and Ionization of Xenon Atoms in Strong UV Laser Fields

Lv¹

2017

JAMS

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Neutral Rydberg state excitation in strong UV laser fields of Xe atoms has been studied and compared with direct ionization. The yields of both strong-field excitation and ionization have been measured as a function of UV laser intensity and ellipticity. The underlying physical mechanism has been discussed based on the experimental results, indicating that the Rydberg states are populated via multiphoton resonance excitation in strong 400 nm laser fields. Finally, a comparative study of Xe and O 2 with similar ionization potentials have been performed, showing the suppressed excitation of molecules in strong UV laser fields.

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Section: Dependence Of the Direct Ionization And Rse Yield On Laser Econtrasting

confidence: 63%

Section: Dependence Of the Direct Ionization And Rse Yield On Laser Ementioning

confidence: 93%

Section: Experiments Setupmentioning

confidence: 99%

Section: Dependence Of the Direct Ionization And Rse On Laser Intensitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Excitation and Ionization of Xenon Atoms in Strong UV Laser Fields

Lv¹

2017

JAMS

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Frustrated tunneling ionization: building a bridge between the internal and macroscopic states of an atom

Eichmann¹,

Patchkovskii²

2023

Advances in Atomic, Molecular, and Optical Physics

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Ionization Suppression of Heteronuclear Diatomic and Triatomic Molecules in Strong Infrared Laser Fields

Zhao

Wang

Zhang

et al. 2017

Chinese Journal of Chemical Physics

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Ionization is the fundamental process in interaction of atoms/molecules with femtosecond strong laser fields. Comparing to atoms, molecules exhibit peculiar behaviors in strong-field ionization because of their diverse geometric structures, molecular electronic orbitals as well as extra nuclear degrees of freedom. In this study, we investigate strong field single and double ionization of carbon monoxide (CO) and carbon dioxide (CO2) in linearly polarized 50-fs, 800-nm laser fields with peak intensity in the range of 2×1013 W/cm2 to 2×1014 W/cm2 using time-of-flight mass spectrometer. By comparing the ionization yields with that of the companion atom krypton (Kr), which has similar ionization potential to the molecules, we investigate the effect of molecular electronic orbitals on the strong-field ionization. The results show that comparing to Kr, no significant suppression is observed in single ionization of both molecules and in non-sequential double ionization (NSDI) of CO, while the NSDI probability of CO2 is strongly suppressed. Based on our results and previous studies on homonuclear diatomic molecules (N2 and O2), the mechanism of different suppression effect is discussed. It is indicated that the different structure of the highest occupied molecular orbitals of CO and CO2 leads to distinct behaviors in two-center interference by the electronic wave-packet and angular distributions of the ionized electrons, resulting in different suppression effect in strong-field ionization.

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Ellipticity dependence of neutral Rydberg excitation of atoms in strong laser fields

Cited by 27 publications

References 37 publications

Excitation and Ionization of Xenon Atoms in Strong UV Laser Fields

Excitation and Ionization of Xenon Atoms in Strong UV Laser Fields

Frustrated tunneling ionization: building a bridge between the internal and macroscopic states of an atom

Ionization Suppression of Heteronuclear Diatomic and Triatomic Molecules in Strong Infrared Laser Fields

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