Photosensitivity and optical performance of hydrogenated amorphous carbon films processed by picosecond laser beams

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dc.contributor.authorPanagiotopoulos, N. T.en
dc.contributor.authorKarras, G.en
dc.contributor.authorLidorikis, E.en
dc.contributor.authorKoutsogeorgis, D. C.en
dc.contributor.authorKosmidis, C.en
dc.contributor.authorPatsalas, P.en
dc.date.accessioned2015-11-24T17:37:17Z
dc.date.available2015-11-24T17:37:17Z
dc.identifier.issn0257-8972-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/14335
dc.rightsDefault Licence-
dc.subjectamorphous carbonen
dc.subjectlaser processingen
dc.subjectpecvden
dc.subjectoptical propertiesen
dc.subjectoptical spectroscopyen
dc.subjectelectron spectroscopyen
dc.subjecta-c-hen
dc.subjectenergy-loss spectroscopyen
dc.subjectdiamond-like carbonen
dc.subjectthin-filmsen
dc.subjectelectronic-structureen
dc.subjectrefractive-indexen
dc.subjectalpha-cen
dc.subjectdensityen
dc.subjectirradiationen
dc.subjectsurfaceen
dc.titlePhotosensitivity and optical performance of hydrogenated amorphous carbon films processed by picosecond laser beamsen
heal.abstractIn this work we investigate the photosensitivity of hydrogenated amorphous Carbon films (a-C:H) and the changes in their structural features and optical properties, when they are exposed to picosecond laser beams of various wavelengths (Nd:YAG, 1st harmonic, lambda=1064 nm and 4th harmonic, lambda=266 nm). The different light matter interactions, which take place for the various laser wavelengths, are considered and discussed. The main findings include the formation of SiC at the a-C:H film/Si interface and the film graphitization, when the 1064 nm and 266 nm beams, respectively, are used. Finally we managed to vary locally the refractive index in the range of 1.60-1.95 (20% variations) by laser processing, a fact that is very important for various applications in photonics. (C) 2011 Elsevier B.V. All rights reserved.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1016/j.surfcoat.2011.02.019-
heal.identifier.secondary<Go to ISI>://000297086700019-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0257897211001198/1-s2.0-S0257897211001198-main.pdf?_tid=4e4f81965fd018630d24f8125d11faab&acdnat=1339755898_2bf62113571f6017da08b7f2beb1d7bb-
heal.journalNameSurface & Coatings Technologyen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2011-
heal.publisherElsevieren
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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