Survival window for atomic tunneling ionization with elliptically polarized laser fields

Kai-Yun, Huang; Xia, Qinzhi; Fu, Libin

doi:10.1103/physreva.87.033415

Cited by 40 publications

(22 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the final atomic energy varies rapidly with the tunneling phase and initial velocity during chaotic scattering, we estimate that the ratio of the two kinds of events (i.e., chaotic events vs. soft rescattering events) is no more than 1/4. The above observation is similar to those for Rydberg atoms3441.…”

Section: Resultssupporting

confidence: 87%

“…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 ionization 33 34 . This effect can reduce the meV electron accumulation.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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

Xia

et al. 2015

Sci Rep

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 87%

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

View full text Add to dashboard Cite

show abstract

“…For shorter pulses of 10 and 4 cycles, the increase disappears in the Zhao et al [8] predictions. We note that peaks at ε = 0 were previously predicted for Mg [9], where it was shown that they are sensitive to the initial conditions of the calculations.…”

Section: Introductionsupporting

confidence: 62%

Ellipticity dependence of excitation and ionization of argon atoms by short-pulse infrared radiation

et al. 2020

View full text Add to dashboard Cite

When atoms or molecules are exposed to strong short-pulse infrared radiation, ionization as well as "frustrated tunneling ionization" (FTI) can occur, in which some of the nearly freed electrons recombine into the initial ground or an excited bound state. We analyze the ellipticity dependence of the relative signals that are predicted in a single-active electron approximation (SAE), the validity of which is checked against a parameter-free multi-electron R-matrix (close-coupling) with time dependence approach. We find good agreement between the results from both models, thereby providing confidence in the SAE model potential to treat the process of interest. Comparison of the relative excitation probabilities found in our numerical calculations with the predictions of Landsman et al. (New Journal of Physics 15 (2013) 013001) and Zhao et al. (Optics Express 27 (2019) 21689) reveals good agreement with the former for short pulses. For longer pulses, the ellipticity dependence becomes wider than that obtained from the Landsman et al. formula, but we do not obtain the increase compared to linearly polarized radiation predicted by Zhao et al.

show abstract

“…Then the tunneled electron will be accelerated in the subsequent scattering mediated by the Coulomb and light fields. The energy gain can be expressed analytically by [27,28]. Ignoring the Coulomb focusing effect, the electron orbit is z = z 0 + F 0 ω 2 (1 − cos ωt), x = (v x − F 0 ω )t + F 0 ω 2 sin(ωt), y = v y t, and then the energy change can be obtained by evaluating the above integral numerically.…”

Section: Methods and Resultsmentioning

confidence: 99%

Rescattering and frustrated tunneling ionization of atoms in circularly polarized laser fields

Qin

et al. 2014

Phys. Rev. A

View full text Add to dashboard Cite

We investigate strong-field ionization dynamics of atoms in circularly polarized laser fields by a threedimensional electron ensemble method which is validated by comparison with ab initio results of solving the time-dependent Schrödinger equation. We show that the Coulomb potential and the electron recollision play very crucial roles for single ionization of atoms with a lower ionization potential in circularly polarized laser fields. We find that the critical laser field strength for recollision scales as F 0 ∼ 2 ln 10ω 2 / 2I p (I p , ionization potential; ω, laser frequency), below which the rescattering is very crucial. As a consequence of recollision, a large amount of tunneled electrons will be ejected into the elliptical orbits of Rydberg states or strongly rescattered off the nucleus and eventually achieve large energy from laser fields. The characteristic feature is that both the relative frustrated tunneling rate and the hard rescattering rate decrease with increasing the laser intensity and the wavelength. This study sheds a light on those processes that are closely related with electron rescattering in circularly polarized laser fields, e.g., high-order harmonic generation and nonsequential double ionization.

show abstract

Survival window for atomic tunneling ionization with elliptically polarized laser fields

Cited by 40 publications

References 28 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

Ellipticity dependence of excitation and ionization of argon atoms by short-pulse infrared radiation

Rescattering and frustrated tunneling ionization of atoms in circularly polarized laser fields

Contact Info

Product

Resources

About