Details
| Original language | English |
|---|---|
| Article number | 836287 |
| Journal | Frontiers in Physics |
| Volume | 10 |
| Publication status | Published - 1 Nov 2022 |
Abstract
We use high-order harmonic spectroscopy to study ionization dynamics in a macroscopic target with tunable density, spanning over six orders of magnitude. In an in situ pump-probe experiment, the target is prepared at different densities with varying degrees of laser-induced ionization. High-order harmonic radiation is generated in the pre-ionized target, and a steepening in the decrease of the harmonic yield is observed for increasing pre-ionization, allowing not only to identify the contributing quantum paths during high-order harmonic generation but also in determining the amount of ionization within the target. The measurements allow probing of ionization dynamics in laser-induced plasma with high spatio-temporal resolution and are specifically of interest for the optimization of the harmonic generation process in high-density targets with number densities of up to 1022 cm−3.
Keywords
- droplets, high-density target, high-order harmonic generation, ionization, pump-probe, spectroscopy, water
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biophysics
- Materials Science(all)
- Materials Science (miscellaneous)
- Mathematics(all)
- Mathematical Physics
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Frontiers in Physics, Vol. 10, 836287, 01.11.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-order harmonic spectroscopy in an ionized high-density target
AU - Kurz, Heiko G.
AU - Kretschmar, Martin
AU - Binhammer, Thomas
AU - Nagy, Tamas
AU - Ristau, Detlev
AU - Lein, Manfred
AU - Morgner, Uwe
AU - Kovačev, Milutin
N1 - Funding Information: We are grateful for the financial support from DFG project no. KO 3798/1-1 and the Air Force Office of Scientific Research under Grant No. FA9550-12-1-0482. This research was supported by Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453).
PY - 2022/11/1
Y1 - 2022/11/1
N2 - We use high-order harmonic spectroscopy to study ionization dynamics in a macroscopic target with tunable density, spanning over six orders of magnitude. In an in situ pump-probe experiment, the target is prepared at different densities with varying degrees of laser-induced ionization. High-order harmonic radiation is generated in the pre-ionized target, and a steepening in the decrease of the harmonic yield is observed for increasing pre-ionization, allowing not only to identify the contributing quantum paths during high-order harmonic generation but also in determining the amount of ionization within the target. The measurements allow probing of ionization dynamics in laser-induced plasma with high spatio-temporal resolution and are specifically of interest for the optimization of the harmonic generation process in high-density targets with number densities of up to 1022 cm−3.
AB - We use high-order harmonic spectroscopy to study ionization dynamics in a macroscopic target with tunable density, spanning over six orders of magnitude. In an in situ pump-probe experiment, the target is prepared at different densities with varying degrees of laser-induced ionization. High-order harmonic radiation is generated in the pre-ionized target, and a steepening in the decrease of the harmonic yield is observed for increasing pre-ionization, allowing not only to identify the contributing quantum paths during high-order harmonic generation but also in determining the amount of ionization within the target. The measurements allow probing of ionization dynamics in laser-induced plasma with high spatio-temporal resolution and are specifically of interest for the optimization of the harmonic generation process in high-density targets with number densities of up to 1022 cm−3.
KW - droplets
KW - high-density target
KW - high-order harmonic generation
KW - ionization
KW - pump-probe
KW - spectroscopy
KW - water
UR - http://www.scopus.com/inward/record.url?scp=85142068110&partnerID=8YFLogxK
U2 - 10.3389/fphy.2022.836287
DO - 10.3389/fphy.2022.836287
M3 - Article
AN - SCOPUS:85142068110
VL - 10
JO - Frontiers in Physics
JF - Frontiers in Physics
M1 - 836287
ER -