Details
| Original language | English |
|---|---|
| Article number | 015001 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 51 |
| Issue number | 1 |
| Early online date | 27 Nov 2017 |
| Publication status | Published - 14 Jan 2018 |
Abstract
In strong-field ionization processes, two-color laser fields are frequently used for controlling sub-cycle electron dynamics via the relative phase of the laser fields. Here we apply this technique to velocity map imaging spectroscopy using an unconventional orientation with the polarization of the ionizing laser field perpendicular to the detector surface and the steering field parallel to it. This geometry allows not only to image the phase-dependent photoelectron momentum distribution (PMD) of low-energy electrons that interact only weakly with the ion (direct electrons), but also to investigate the low yield of higher-energy rescattered electrons. Phase-dependent measurements of the PMD of neon and xenon demonstrate control over direct and rescattered electrons. The results are compared with semi-classical calculations in three dimensions including elastic scattering at different orders of return and with solutions of the three-dimensional time-dependent Schrödinger equation.
Keywords
- elastic scattering for multiple electron returns, orthogonal two-color laser fields, phase-dependent photoelectron momentum distribution, semi-classical calculations in three dimensions, strong-field ionization, three-dimensional time-dependent Schrodinger equation, velocity map imaging spectroscopy
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. 51, No. 1, 015001, 14.01.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Velocity map imaging of scattering dynamics in orthogonal two-color fields
AU - Würzler, D.
AU - Eicke, Nicolas
AU - Möller, Malte
AU - Seipt, D.
AU - Sayler, A. Max
AU - Fritzsche, S.
AU - Lein, Manfred
AU - Paulus, Gerhard G.
N1 - Funding Information: This work was supported by grant PA730/4 and FR 1251/ 17-1 within the Priority Programme ‘Quantum Dynamics in Tailored Intense Fields (QUTIF)’ of the German Research Foundation (DFG).
PY - 2018/1/14
Y1 - 2018/1/14
N2 - In strong-field ionization processes, two-color laser fields are frequently used for controlling sub-cycle electron dynamics via the relative phase of the laser fields. Here we apply this technique to velocity map imaging spectroscopy using an unconventional orientation with the polarization of the ionizing laser field perpendicular to the detector surface and the steering field parallel to it. This geometry allows not only to image the phase-dependent photoelectron momentum distribution (PMD) of low-energy electrons that interact only weakly with the ion (direct electrons), but also to investigate the low yield of higher-energy rescattered electrons. Phase-dependent measurements of the PMD of neon and xenon demonstrate control over direct and rescattered electrons. The results are compared with semi-classical calculations in three dimensions including elastic scattering at different orders of return and with solutions of the three-dimensional time-dependent Schrödinger equation.
AB - In strong-field ionization processes, two-color laser fields are frequently used for controlling sub-cycle electron dynamics via the relative phase of the laser fields. Here we apply this technique to velocity map imaging spectroscopy using an unconventional orientation with the polarization of the ionizing laser field perpendicular to the detector surface and the steering field parallel to it. This geometry allows not only to image the phase-dependent photoelectron momentum distribution (PMD) of low-energy electrons that interact only weakly with the ion (direct electrons), but also to investigate the low yield of higher-energy rescattered electrons. Phase-dependent measurements of the PMD of neon and xenon demonstrate control over direct and rescattered electrons. The results are compared with semi-classical calculations in three dimensions including elastic scattering at different orders of return and with solutions of the three-dimensional time-dependent Schrödinger equation.
KW - elastic scattering for multiple electron returns
KW - orthogonal two-color laser fields
KW - phase-dependent photoelectron momentum distribution
KW - semi-classical calculations in three dimensions
KW - strong-field ionization
KW - three-dimensional time-dependent Schrodinger equation
KW - velocity map imaging spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85038637289&partnerID=8YFLogxK
U2 - 10.1088/1361-6455/aa975c
DO - 10.1088/1361-6455/aa975c
M3 - Article
AN - SCOPUS:85038637289
VL - 51
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 1
M1 - 015001
ER -