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https://hdl.handle.net/10356/144719
Title: | Fundamental mechanisms of nanosecond-laser-ablation enhancement by an axial magnetic field | Authors: | Farrokhi, Hamid Gruzdev, Vitaly Zheng, Hongyu Zhou, Wei |
Keywords: | Engineering::Mechanical engineering | Issue Date: | 2019 | Source: | Farrokhi, 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.36.001091 | Journal: | Journal of the Optical Society of America B | Abstract: | A 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. | URI: | https://hdl.handle.net/10356/144719 | ISSN: | 0740-3224 | DOI: | 10.1364/JOSAB.36.001091 | 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. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MAE Journal Articles |
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