Analysis of the thermalization dynamics of two-layer thin films irradiated by femtosecond laser

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dc.authoridGünay, M. Erdem/0000-0003-1282-718X|Bayata, Fatma/0000-0003-4129-8838
dc.authorwosidGünay, M. Erdem/I-1564-2019
dc.contributor.authorTunc, K. M. Murat
dc.contributor.authorGunay, M. Erdem
dc.contributor.authorBayata, Fatma
dc.date.accessioned2024-07-18T20:42:44Z
dc.date.available2024-07-18T20:42:44Z
dc.date.issued2020
dc.departmentİstanbul Bilgi Üniversitesien_US
dc.description.abstractIn this work, ultrafast thermalization dynamics was examined for a variety of two layer-thin films (Au/Si, Au/Ni, Au/W, Au/Al and Au/Pb). Non-equilibrium energy transport under laser irradiation was formulated for the electron and lattice sub-systems of the thin films. A significant reduction in the temperature of the electron and the lattice of the gold surface was observed especially for Au/Si and Au/Ni thin films due to their large G values. Next, the effects of laser power intensity and laser heating duration on the temperature distributions were examined for Au/Ni two-layer thin film. It was found that, as the laser intensity increased, the maximum electron temperature increased dramatically; on the other hand, as the pulse heating duration increased, the electron temperature gradually decreased. It was then concluded that thermal damage threshold of the gold surface can be improved by depositing gold layer on a substrate material with high electron-phonon coupling factor. Hence the thermal failure of thin films used in optical components of ultrafast laser systems or micro/nano electro mechanical systems can be prevented.en_US
dc.identifier.doi10.1016/j.ijleo.2019.164137
dc.identifier.issn0030-4026
dc.identifier.issn1618-1336
dc.identifier.scopus2-s2.0-85077142469en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijleo.2019.164137
dc.identifier.urihttps://hdl.handle.net/11411/7395
dc.identifier.volume208en_US
dc.identifier.wosWOS:000535717800023en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Gmbhen_US
dc.relation.ispartofOptiken_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFemtosecond Laseren_US
dc.subjectInterfaceen_US
dc.subjectThin Filmsen_US
dc.subjectThermal Damageen_US
dc.subjectHeat Transferen_US
dc.subjectFinite-Difference Methoden_US
dc.subjectHeat-Transferen_US
dc.subjectMetal-Filmsen_US
dc.subjectDamage Thresholden_US
dc.subjectEnergy-Transferen_US
dc.subjectCu Substrateen_US
dc.subjectAu Filmen_US
dc.subjectTransporten_US
dc.subjectSiliconen_US
dc.subjectSimulationen_US
dc.titleAnalysis of the thermalization dynamics of two-layer thin films irradiated by femtosecond laser
dc.typeArticle

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