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dc.contributor.advisorChen, Jinn-Kueneng
dc.contributor.advisorZhang, Yuwen, 1965-eng
dc.contributor.authorRen, Yunpengeng
dc.date.issued2012eng
dc.date.submitted2012 Falleng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on March 5, 2013).eng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionDissertation advisors: Dr. Jinn-Kuen Chen and Dr. Yuwen Zhangeng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionVita.eng
dc.descriptionPh. D. University of Missouri--Columbia 2012.eng
dc.description"December 2012."eng
dc.description.abstractA comprehensive laser material ablation model was developed to describe energy transport, ultrafast phase changes, and material ablation of metal films irradiated by ultrashort laser pulses. The two optical models were incorporated into the TTM to simulate laser energy deposition and the resulting thermal response, ultrafast phase changes from solid to liquid and from liquid to vapor, and phase explosion of metal films irradiated by ultrashort laser pulses. It was found that dynamic optical properties could play a very important role in modeling ultrashort-pulsed laser interactions with metal materials. In the semi-classical TTM, due to the effect of electron drifting, slightly lower electron and lattice temperatures were obtained compared to those calculated by the classical TTM under the same laser irradiation conditions. Higher laser fluence and longer pulse duration could result in more distinct difference between the two models. For multi-pulse irradiations, the results showed that with the same total energy in a laser burst, more pulses with a shorter separation time, e.g., 1 ps, or fewer pulses with a longer separation time, e.g., 100 ps, could achieve higher lattice temperature. Results of laser material ablations show that for high laser fluences phase explosion is a dominating mechanism in material ablation. The simulated ablation depths correlated very well with existing experimental data over a broad range of fluences, 0.6 - 30 J/cm2.eng
dc.description.bibrefIncludes bibliographical references.eng
dc.format.extentxvii, 105 pageseng
dc.identifier.oclc872569220eng
dc.identifier.urihttps://hdl.handle.net/10355/33101
dc.identifier.urihttps://doi.org/10.32469/10355/33101eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsOpenAccesseng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.subjectultrafast lasereng
dc.subjecttwo-temperature modeleng
dc.subjectcritical point modeleng
dc.subjectlaser ablationeng
dc.titleA comprehensive model for energy transport and ablation of metal films induced by ultrashort pulsed laserseng
dc.typeThesiseng
thesis.degree.disciplineMechanical and aerospace engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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