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Title: Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses
Authors: Farrokhi, Hamid
Gruzdev, V.
Zheng, Hong Yu
Rawat, R. S.
Zhou, Wei
Keywords: Magnetic fields
Laser ablation
Issue Date: 2016
Source: Farrokhi, H., Gruzdev, V., Zheng, H. Y., Rawat, R. S., & Zhou, W. (2016). Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses. Applied Physics Letters, 108(25), 254103-.
Series/Report no.: Applied Physics Letters
Abstract: A constant magnetic field can significantly improve the quality and speed of ablation by nanosecond laser pulses. These improvements are usually attributed to the confinement of laser-produced plasma by the magnetic field and specific propagation effects in the magnetized plasma. Here we report a strong influence of constant axial magnetic field on the ablation of silicon by 20-ns laser pulses at wavelength 355 nm, which results in an increase of ablation depth by a factor of 1.3 to 69 depending on laser parameters and magnitude of the magnetic field. The traditional plasma effects do not explain this result, and magneto-absorption of silicon is proposed as one of the major mechanisms of the significant enhancement of ablation.
ISSN: 0003-6951
DOI: 10.1063/1.4954708
Rights: © 2016 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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