Details
| Original language | English |
|---|---|
| Article number | 204016 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 47 |
| Issue number | 20 |
| Publication status | Published - 8 Oct 2014 |
Abstract
We verify the theory of nonadiabatic ionization of degenerate valence p± orbitals in strong circularly polarized laser fields by numerically solving the two-dimensional time-dependent Schrdinger equation for an effective one-electron potential of neon. The numerically calculated ionization ratios of the p- and p+ orbitals agree well with the theoretical results (i.e., the counterrotating electron tunnels more easily). However, for strong laser pulses and low laser frequencies, the adiabatic laser-dressed orbitals play an important role. In a Floquet treatment of a three-level model, we find that in this regime the ionization ratio of initial p- and p+ orbitals depends strongly on the orbital energy order of valence s and p± orbitals. We also show that the emission angles of valence p-and p+ electrons are different and should be observable in attoclock experiments.
Keywords
- Laser-dressed orbitals, Nonadiabatic tunnel ionization, Numerical solution of the time-dependent Schrödinger equation, Strong circularly polarized laser fields
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 47, No. 20, 204016, 08.10.2014.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical verification of the theory of nonadiabatic tunnel ionization in strong circularly polarized laser fields
AU - Barth, Ingo
AU - Lein, Manfred
N1 - Publisher Copyright: © 2014 IOP Publishing Ltd Printed in the UK. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2014/10/8
Y1 - 2014/10/8
N2 - We verify the theory of nonadiabatic ionization of degenerate valence p± orbitals in strong circularly polarized laser fields by numerically solving the two-dimensional time-dependent Schrdinger equation for an effective one-electron potential of neon. The numerically calculated ionization ratios of the p- and p+ orbitals agree well with the theoretical results (i.e., the counterrotating electron tunnels more easily). However, for strong laser pulses and low laser frequencies, the adiabatic laser-dressed orbitals play an important role. In a Floquet treatment of a three-level model, we find that in this regime the ionization ratio of initial p- and p+ orbitals depends strongly on the orbital energy order of valence s and p± orbitals. We also show that the emission angles of valence p-and p+ electrons are different and should be observable in attoclock experiments.
AB - We verify the theory of nonadiabatic ionization of degenerate valence p± orbitals in strong circularly polarized laser fields by numerically solving the two-dimensional time-dependent Schrdinger equation for an effective one-electron potential of neon. The numerically calculated ionization ratios of the p- and p+ orbitals agree well with the theoretical results (i.e., the counterrotating electron tunnels more easily). However, for strong laser pulses and low laser frequencies, the adiabatic laser-dressed orbitals play an important role. In a Floquet treatment of a three-level model, we find that in this regime the ionization ratio of initial p- and p+ orbitals depends strongly on the orbital energy order of valence s and p± orbitals. We also show that the emission angles of valence p-and p+ electrons are different and should be observable in attoclock experiments.
KW - Laser-dressed orbitals
KW - Nonadiabatic tunnel ionization
KW - Numerical solution of the time-dependent Schrödinger equation
KW - Strong circularly polarized laser fields
UR - http://www.scopus.com/inward/record.url?scp=84907833410&partnerID=8YFLogxK
U2 - 10.1088/0953-4075/47/20/204016
DO - 10.1088/0953-4075/47/20/204016
M3 - Article
AN - SCOPUS:84907833410
VL - 47
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 20
M1 - 204016
ER -