Details
| Original language | English |
|---|---|
| Article number | 053202 |
| Journal | Physical review letters |
| Volume | 126 |
| Issue number | 5 |
| Publication status | Published - 4 Feb 2021 |
Abstract
Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a donut-shaped electron momentum distribution. Within the dipole approximation this distribution is symmetric with respect to the polarization plane. The magnetic component of the light field is known to shift this distribution forward. Here, we show that this magnetic nondipole effect is not the only nondipole effect in strong-field ionization. We find that an electric nondipole effect arises that is due to the position dependence of the electric field and which can be understood in analogy to the Doppler effect. This electric nondipole effect manifests as an increase of the radius of the donut-shaped photoelectron momentum distribution for forward-directed momenta and as a decrease of this radius for backwards-directed electrons. We present experimental data showing this fingerprint of the electric nondipole effect and compare our findings with a classical model and quantum calculations.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 126, No. 5, 053202, 04.02.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electric Nondipole Effect in Strong-Field Ionization
AU - Hartung, A.
AU - Brennecke, S.
AU - Lin, K.
AU - Trabert, D.
AU - Fehre, K.
AU - Rist, J.
AU - Schöffler, M. S.
AU - Jahnke, T.
AU - Schmidt, L. Ph H.
AU - Kunitski, M.
AU - Lein, M.
AU - Dörner, R.
AU - Eckart, S.
N1 - Funding Information: A. H. and K. F. acknowledge support by the German Academic Scholarship Foundation. The experimental work was supported by the DFG (German Research Foundation). K. L. acknowledges support by the Alexander von Humboldt Foundation. S. B., M. L., and S. E. acknowledge funding of the DFG through Priority Programme SPP 1840 QUTIF.
PY - 2021/2/4
Y1 - 2021/2/4
N2 - Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a donut-shaped electron momentum distribution. Within the dipole approximation this distribution is symmetric with respect to the polarization plane. The magnetic component of the light field is known to shift this distribution forward. Here, we show that this magnetic nondipole effect is not the only nondipole effect in strong-field ionization. We find that an electric nondipole effect arises that is due to the position dependence of the electric field and which can be understood in analogy to the Doppler effect. This electric nondipole effect manifests as an increase of the radius of the donut-shaped photoelectron momentum distribution for forward-directed momenta and as a decrease of this radius for backwards-directed electrons. We present experimental data showing this fingerprint of the electric nondipole effect and compare our findings with a classical model and quantum calculations.
AB - Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a donut-shaped electron momentum distribution. Within the dipole approximation this distribution is symmetric with respect to the polarization plane. The magnetic component of the light field is known to shift this distribution forward. Here, we show that this magnetic nondipole effect is not the only nondipole effect in strong-field ionization. We find that an electric nondipole effect arises that is due to the position dependence of the electric field and which can be understood in analogy to the Doppler effect. This electric nondipole effect manifests as an increase of the radius of the donut-shaped photoelectron momentum distribution for forward-directed momenta and as a decrease of this radius for backwards-directed electrons. We present experimental data showing this fingerprint of the electric nondipole effect and compare our findings with a classical model and quantum calculations.
UR - http://www.scopus.com/inward/record.url?scp=85100982717&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2008.07638
DO - 10.48550/arXiv.2008.07638
M3 - Article
C2 - 33605768
AN - SCOPUS:85100982717
VL - 126
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 5
M1 - 053202
ER -