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dc.contributor.authorFarrokhi, Hamiden_US
dc.contributor.authorGruzdev, Vitalyen_US
dc.contributor.authorZheng, Hongyuen_US
dc.contributor.authorZhou, Weien_US
dc.identifier.citationFarrokhi, H., Gruzdev, V., Zheng, H., & Zhou, W. (2019). Fundamental mechanisms of nanosecond-laser-ablation enhancement by an axial magnetic field. Journal of the Optical Society of America B, 36(4), 1091–1100. doi:10.1364/josab.36.001091en_US
dc.description.abstractA steady magnetic field perpendicular to a laser beam is widely used to improve the rate and quality of laser ablation. Recently, we reported a 69-fold enhancement of laser ablation of silicon using a magnetic field parallel to a laser beam. To understand the fundamental mechanisms of that phenomenon, multipulse magnetic-field-enhanced ablation of stainless steel, titanium alloy, and silicon was performed. The influence of magnetic field varies significantly depending on the material: from 2.8-fold ablation enhancement on stainless steel and silicon to no pronounced ablation modification on titanium alloy. Those results are discussed in terms of magnetized-plasma, magneto-absorption, skin-layer, and magnetic-field-influenced transport effects. Understanding of those mechanisms is crucial for advanced control of nanosecond laser–surface coupling to improve laser micromachining.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.relation.ispartofJournal of the Optical Society of America Ben_US
dc.rights© 2019 Optical Society of America. All rights reserved. This paper was published in Journal of the Optical Society of America B and is made available with permission of Optical Society of America.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleFundamental mechanisms of nanosecond-laser-ablation enhancement by an axial magnetic fielden_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsLaser Beamen_US
dc.subject.keywordsLorenz Forceen_US
dc.description.acknowledgementThe authors acknowledge A*StarSINGA scholarship and SIMTech for their support. Dr.Wolfgang Rudolph of the University of New Mexico is ac-knowledged for a kind suggestion to consider the skin-layereffects.en_US
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