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The Theory of Laser Materials Processing

Hüttner, Bernd and Dowden, John and Schulz, Wolfgang and Kaplan, Alexander and Richardson, Ian and Lepski, Dietrich and Pretorius, Thomas and Gross, Markus (2009) The Theory of Laser Materials Processing. In: The Theory of Laser Materials Processing Heat and Mass Transfer in Modern Technology, 119. Springer. pp. 315-338. ISBN 13 978-1-4020-9339-5. ISSN 1860-0832.

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Official URL: http://www.springer.com


In this chapter some aspects of the interaction of femtosecond laser pulses with metals has been considered and compared with the effects of longer pulses. The most important point is, perhaps, that metals exposed to femtosecond laser pulses are no longer in local thermal equilibrium. On short time scales the electron and phonon subsystem are decoupled and may have very different temperatures. Moreover, the electrons are governed by a nonequilibrium distribution and not by the Fermi-Dirac distribution even for low intensities. In many cases, depending on the value of the electron temperature relaxation time, the parabolic heat conduc-tion (TTM) is no longer suitable for the determination of the electron temperature distribution and should be replaced by the ETTM.

Item URL in elib:https://elib.dlr.de/58118/
Document Type:Book Section
Title:The Theory of Laser Materials Processing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dowden, JohnDept. of Math. Sciences, Uni. of Essex, UKUNSPECIFIED
Schulz, WolfgangILT AachenUNSPECIFIED
Kaplan, AlexanderLuela University of Technology, SwedenUNSPECIFIED
Richardson, IanDept. Material Sciences and Engineering, Delft, NetherlandsUNSPECIFIED
Lepski, DietrichFHI for Material and Beam Technology, DresdenUNSPECIFIED
Pretorius, ThomasBIAS, BremenUNSPECIFIED
Gross, MarkusUni. of Cambridge, Dept. of Engineering, UKUNSPECIFIED
Date:January 2009
Journal or Publication Title:The Theory of Laser Materials Processing
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 315-338
EditorsEmailEditor's ORCID iD
Series Name:Heat and Mass Transfer in Modern Technology
ISBN:13 978-1-4020-9339-5
Keywords:electron-electron scattering time, nonequilibrium electron distribution, femtosecond laser pulses, change of optical and thermal properties, electron and phonon temperature distribution, two-temperature model, extended two-temperature model
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Lampoldshausen , Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Hüttner, Dr.rer.nat. Bernd
Deposited On:02 Mar 2009
Last Modified:27 Apr 2009 15:50

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