Laser-induced plasma- and gas spectroscopy from femtosecond laser-ablated protective coatings

Christian Rosenberg Petersen; Doyinsola S. Sonoiki; Morten Schnohr; Kim Scheibel; Asbjørn M. Moltke; Callum R. Smith; Ole Bang

doi:10.1117/12.2692205

13 March 2024 Laser-induced plasma- and gas spectroscopy from femtosecond laser-ablated protective coatings

Christian Rosenberg Petersen, Doyinsola S. Sonoiki, Morten Schnohr, Kim Scheibel, Asbjørn M. Moltke, Callum R. Smith, Ole Bang

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Proceedings Volume 12878, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XIII; 128780B (2024) https://doi.org/10.1117/12.2692205
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Laser-ablation is an attractive alternative to abrasive/hydro blasting for the removal of protective coatings from metallic surfaces. However, the ablation process can lead to the formation of potentially hazardous gases, including volatile organic compounds and greenhouse gases. In this work, we investigate femtosecond laser-ablation of marine coatings by analyzing the ultraviolet/visible (UV/VIS) emission from the ablation plasma and performing mid-infrared absorption spectroscopy on the ablation fumes. By identifying the atomic/ionic composition of the plasma and the molecular composition of the fumes, we gain additional insights into the laser-ablation process and potential hazards for human health. This work is supported by VILLUM FONDEN (Villum Investigator project Table-Top Synchrotrons, no. 00037822) and the Danish Maritime Fund (LASER-CLEANR, no. 2022-054).

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Christian Rosenberg Petersen, Doyinsola S. Sonoiki, Morten Schnohr, Kim Scheibel, Asbjørn M. Moltke, Callum R. Smith, and Ole Bang "Laser-induced plasma- and gas spectroscopy from femtosecond laser-ablated protective coatings", Proc. SPIE 12878, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XIII, 128780B (13 March 2024); https://doi.org/10.1117/12.2692205

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KEYWORDS

Gas lasers

Laser spectroscopy

Protective coatings

Spectroscopy

Femtosecond phenomena

Laser ablation

Gases

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