Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity
Materials Science
2018-01-17 v1
Abstract
We present time-resolved x-ray reflectivity measurements on laser excited coherent and incoherent surface deformations of thin metallic films. Based on a kinematical diffraction model, we derive the surface amplitude from the diffracted x-ray intensity and resolve transient surface excursions with sub-Angstrom spatial precision and 70 ps temporal resolution. The novel analysis allows for decomposition of the surface amplitude into multiple coherent acoustic modes and a substantial contribution from incoherent phonons which constitute the sample heating.
Keywords
Cite
@article{arxiv.1712.07931,
title = {Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity},
author = {Matthias Sander and Jan-Etienne Pudell and Marc Herzog and Matias Bargheer and Roman Bauer and Valentin Besse and Vasily Temnov and Peter Gaal},
journal= {arXiv preprint arXiv:1712.07931},
year = {2018}
}
Comments
4 pages, 3 figures