Femtosecond pulse laser ablation and surface modification of aluminum alloy 2024

Kai Dou; Robert L. Parkhill; Edward T. Knobbe

doi:10.1117/12.384297

4 May 2000 Femtosecond pulse laser ablation and surface modification of aluminum alloy 2024

Kai Dou, Robert L. Parkhill, Edward T. Knobbe

Proceedings Volume 3931, Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications; (2000) https://doi.org/10.1117/12.384297
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

Laser processing of metallic surfaces using a fs pulse laser has bene shown to produce novel effects. We demonstrate nanoscaled surface texturing effects of aluminum alloy 2024 using femtosecond pulse laser irradiation. The laser source is a 248-nm excimer laser with a pulse width of 500fs delivering a laser output fluence in a range from 0.02 to 10 J/cm². The micrographs of the scanning electron microscopy have been characterized as a function of incident laser fluence. Results indicate that the surface futures, ranging from nanoscale to microns, can be developed through variation in fluence intensities. Advantages of femtosecond pulse laser for precise metal microstructuring and physical mechanisms for ultrashort pulse laser ablation have been discussed.

Citation Download Citation

Kai Dou, Robert L. Parkhill, and Edward T. Knobbe "Femtosecond pulse laser ablation and surface modification of aluminum alloy 2024", Proc. SPIE 3931, Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications, (4 May 2000); https://doi.org/10.1117/12.384297

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