Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses
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 st...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/85026 http://hdl.handle.net/10220/41085 |
| _version_ | 1811685951142887424 |
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| author | Farrokhi, Hamid Gruzdev, V. Zheng, Hong Yu Rawat, R. S. Zhou, Wei |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Farrokhi, Hamid Gruzdev, V. Zheng, Hong Yu Rawat, R. S. Zhou, Wei |
| author_sort | Farrokhi, Hamid |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:52:40Z |
| format | Journal Article |
| id | ntu-10356/85026 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:52:40Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/850262020-09-26T22:10:37Z Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses Farrokhi, Hamid Gruzdev, V. Zheng, Hong Yu Rawat, R. S. Zhou, Wei School of Mechanical and Aerospace Engineering Machining Technology Group A*STAR SIMTech Magnetic fields Laser ablation 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. ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version 2016-08-05T03:01:02Z 2019-12-06T15:55:50Z 2016-08-05T03:01:02Z 2019-12-06T15:55:50Z 2016 Journal Article 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-. 0003-6951 https://hdl.handle.net/10356/85026 http://hdl.handle.net/10220/41085 10.1063/1.4954708 en Applied Physics Letters © 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: [http://dx.doi.org/10.1063/1.4954708]. 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. 4 p. application/pdf |
| spellingShingle | Magnetic fields Laser ablation Farrokhi, Hamid Gruzdev, V. Zheng, Hong Yu Rawat, R. S. Zhou, Wei Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title | Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title_full | Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title_fullStr | Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title_full_unstemmed | Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title_short | Magneto-absorption effects in magnetic-field assisted laser ablation of silicon by UV nanosecond pulses |
| title_sort | magneto absorption effects in magnetic field assisted laser ablation of silicon by uv nanosecond pulses |
| topic | Magnetic fields Laser ablation |
| url | https://hdl.handle.net/10356/85026 http://hdl.handle.net/10220/41085 |
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