Details
| Original language | English |
|---|---|
| Article number | 063102 |
| Journal | Physical Review A |
| Volume | 107 |
| Issue number | 6 |
| Publication status | Published - 5 Jun 2023 |
Abstract
The Coulomb interaction between the active electron and the parent ion is inherent in high-order harmonic generation from laser-driven atoms, but it is often neglected in modeling the electron dynamics. For this reason, the pioneering measurement scheme based on orthogonally polarized two-color fields [reported in Nature (London) 485, 343 (2012)0028-083610.1038/nature11025], which is able to measure ionization and return times for the electron trajectories, does not reflect the time shifts caused by the Coulomb interaction. We introduce a simple Coulomb correction to the electron motion in the two-color scheme, leading to modified retrieval equations for the extraction of time information from the observables. We apply the modified equations to data calculated from simulations of the time-dependent Schrödinger equation and we show that the scheme effectively reveals the Coulomb shift of the ionization time.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A, Vol. 107, No. 6, 063102, 05.06.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Observing the Coulomb shifts of ionization times in high-order harmonic generation
AU - Yue, Shengjun
AU - Liu, Jin
AU - Xue, Shan
AU - Du, Hongchuan
AU - Lein, Manfred
N1 - Funding Information: This work has been supported by the National Natural Science Foundation of China (Grants No. 12204209, No. 12274188, and No. 12064023).
PY - 2023/6/5
Y1 - 2023/6/5
N2 - The Coulomb interaction between the active electron and the parent ion is inherent in high-order harmonic generation from laser-driven atoms, but it is often neglected in modeling the electron dynamics. For this reason, the pioneering measurement scheme based on orthogonally polarized two-color fields [reported in Nature (London) 485, 343 (2012)0028-083610.1038/nature11025], which is able to measure ionization and return times for the electron trajectories, does not reflect the time shifts caused by the Coulomb interaction. We introduce a simple Coulomb correction to the electron motion in the two-color scheme, leading to modified retrieval equations for the extraction of time information from the observables. We apply the modified equations to data calculated from simulations of the time-dependent Schrödinger equation and we show that the scheme effectively reveals the Coulomb shift of the ionization time.
AB - The Coulomb interaction between the active electron and the parent ion is inherent in high-order harmonic generation from laser-driven atoms, but it is often neglected in modeling the electron dynamics. For this reason, the pioneering measurement scheme based on orthogonally polarized two-color fields [reported in Nature (London) 485, 343 (2012)0028-083610.1038/nature11025], which is able to measure ionization and return times for the electron trajectories, does not reflect the time shifts caused by the Coulomb interaction. We introduce a simple Coulomb correction to the electron motion in the two-color scheme, leading to modified retrieval equations for the extraction of time information from the observables. We apply the modified equations to data calculated from simulations of the time-dependent Schrödinger equation and we show that the scheme effectively reveals the Coulomb shift of the ionization time.
UR - http://www.scopus.com/inward/record.url?scp=85161901780&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.107.063102
DO - 10.1103/PhysRevA.107.063102
M3 - Article
AN - SCOPUS:85161901780
VL - 107
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 6
M1 - 063102
ER -