Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity

M. Sander; J. E. Pudell; M. Herzog; M. Bargheer; R. Bauer; V. Besse; V. Temnov; P. Gaal

doi:10.1063/1.5004522

Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity

M. Sander
, J. E. Pudell
, M. Herzog
, M. Bargheer
, R. Bauer
, V. Besse
, V. Temnov
, P. Gaal

University of Potsdam
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Universität Hamburg
Le Mans Universite

Research output: Contribution to journal › Article › peer-review

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-Å spatial precision and 70 ps temporal resolution. The 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.

Original language	English
Article number	261903
Journal	Applied Physics Letters
Volume	111
Issue number	26
DOIs	https://doi.org/10.1063/1.5004522
Publication status	Published - 25 Dec 2017
Externally published	Yes

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10.1063/1.5004522

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title = "Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity",

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-{\AA} spatial precision and 70 ps temporal resolution. The 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.",

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T1 - Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity

AU - Sander, M.

AU - Pudell, J. E.

AU - Herzog, M.

AU - Bargheer, M.

AU - Bauer, R.

AU - Besse, V.

AU - Temnov, V.

AU - Gaal, P.

PY - 2017/12/25

Y1 - 2017/12/25

N2 - 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-Å spatial precision and 70 ps temporal resolution. The 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.

AB - 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-Å spatial precision and 70 ps temporal resolution. The 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.

UR - https://www.scopus.com/pages/publications/85040095184

U2 - 10.1063/1.5004522

DO - 10.1063/1.5004522

M3 - Article

AN - SCOPUS:85040095184

SN - 0003-6951

VL - 111

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 261903

ER -

Quantitative disentanglement of coherent and incoherent laser-induced surface deformations by time-resolved x-ray reflectivity

Abstract

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