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Femtosecond laser ablation characteristics of nickel-based superalloy C263

This work was the first to confirm the nature of the interaction of femtosecond laser pulses with a specialist engineering alloy. It determined fluence thresholds, ablation depth etc. It reported the first observations of structuring in the centre of the ablation pit and the development of these structures. Evidence was presented on the ablation products, being the first to confirm a crystal structure in the nanoparticles and the closeness of their chemical composition to the substrate materials. This is important in that although the process is in industrial use, little had been previously reported on the generation of alloyed nanoparticles.