[HTML][HTML] Ultrafast pump-probe ellipsometry and microscopy reveal the surface dynamics of femtosecond laser ablation of aluminium and stainless steel

J Winter, S Rapp, M Spellauge, C Eulenkamp… - Applied Surface …, 2020 - Elsevier
An ultra-short laser pulse irradiated surface passes through a sequence of physical
processes that occur over a wide temporal range, from femtoseconds to microseconds. In …

[HTML][HTML] Exploring femtosecond laser ablation by snapshot ultrafast imaging and molecular dynamics simulation

J Yao, D Qi, H Liang, Y He, Y Yao, T Jia, Y Yang… - Ultrafast …, 2022 - spj.science.org
Femtosecond laser ablation (FLA) has been playing a prominent role in precision fabrication
of material because of its circumvention of thermal effect and extremely high spatial …

Resolving transient temperature and density during ultrafast laser ablation of aluminum

J Winter, D Redka, J Minár, M Schmidt, HP Huber - Applied Physics A, 2023 - Springer
To understand the dynamics of ultrashort-pulse laser ablation, the interpretation of ultrafast
time-resolved optical experiments is of utmost importance. To this end, spatiotemporally …

Drude-lorentz model for optical properties of photoexcited transition metals under electron-phonon nonequilibrium

E Silaeva, L Saddier, JP Colombier - Applied Sciences, 2021 - mdpi.com
Evaluating the optical properties of matter under the action of ultrafast light is crucial in
modeling laser–surface interaction and interpreting laser processing experiments. We report …

[HTML][HTML] Broadband femtosecond spectroscopic ellipsometry

S Richter, M Rebarz, O Herrfurth, S Espinoza… - Review of Scientific …, 2021 - pubs.aip.org
We present a setup for time-resolved spectroscopic ellipsometry in a pump–probe scheme
using femtosecond laser pulses. As a probe, the system deploys supercontinuum white light …

Ultrafast dynamics of hot charge carriers in an oxide semiconductor probed by femtosecond spectroscopic ellipsometry

S Richter, O Herrfurth, S Espinoza… - New Journal of …, 2020 - iopscience.iop.org
Many linked processes occur concurrently in strongly excited semiconductors, such as
interband and intraband absorption, scattering of electrons and holes by the heated lattice …

Laser‐Induced Positional and Chemical Lattice Reordering Generating Ferromagnetism

T Pflug, J Pablo‐Navarro, MS Anwar… - Advanced Functional …, 2024 - Wiley Online Library
Atomic scale reordering of lattices can induce local modulations of functional material
properties, such as reflectance and ferromagnetism. Pulsed femtosecond laser irradiation …

Ultrafast spallation dynamics of a thin gold film characterized by imaging pump-probe interferometry

T Pflug, M Olbrich, H Loheit, A Horn - Applied Physics A, 2024 - Springer
Interferometry allows to measure microscopic displacements in the nanometer scale. This
work introduces an imaging pump-probe interferometer that enables to detect the spatially …

Hydrodynamic modeling and time-resolved imaging reflectometry of the ultrafast laser-induced ablation of a thin gold film

M Olbrich, T Pflug, C Wüstefeld, M Motylenko… - Optics and Lasers in …, 2020 - Elsevier
The ablation of thin metal films using ultrafast laser radiation represents a standard
processing procedure in laser technology. However, looking closer to the resulting …

Fluence-dependent transient reflectance of stainless steel investigated by ultrafast imaging pump–probe reflectometry

T Pflug, M Olbrich, J Winter, J Schille… - The Journal of …, 2021 - ACS Publications
The ablation efficiency during laser processing strongly depends on the initial and transient
reflectance of the irradiated material surface. This article reports on the transient relative …