NDLI: Time-resolved quantification of plasma accumulation induced by multi-pulse laser ablation using self-mixing interferometry

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Time-resolved quantification of plasma accumulation induced by multi-pulse laser ablation using self-mixing interferometry

Content Provider	Scilit
Author	Donadello, Simone Finazzi, Miss Valentina Demir, Ali Gökhan Previtali, Barbara
Copyright Year	2020
Description	Journal: Journal of Physics D: Applied Physics In this work a method based on self-mixing interferometry (SMI) is presented for probing the concentration of plasma plumes induced by multi-pulse laser ablation. An analytical model is developed to interpret the single-arm interferometric signal in terms of plasma electron number density. Its time dependence follows a power-law scaling which is determined by concurrent effects of plume accumulation and propagation. The model has been applied for the experimental study of plume formation at variable laser pulse frequencies on different materials. The plume expansion dynamics has been observed with high-speed imaging, and the SMI measurements allowed for a time-resolved estimation of the electron number density. The intrinsic advantages of the SMI technique in terms of robustness and low intrusiveness would allow for its usage as a fast diagnostic tool for the dynamical scaling of laser-induced plumes. Moreover it can be easily applied in laser-based manufacturing technologies where plasma concentration monitoring and control is important.
Related Links	https://iopscience.iop.org/article/10.1088/1361-6463/abadc2/pdf
ISSN	00223727
e-ISSN	13616463
DOI	10.1088/1361-6463/abadc2
Journal	Journal of Physics D: Applied Physics
Issue Number	49
Volume Number	53
Language	English
Publisher	IOP Publishing
Publisher Date	2020-08-10
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics D: Applied Physics
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Acoustics and Ultrasonics Condensed Matter Physics Electronic, Optical and Magnetic Materials

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