Long GHz-Burst Laser Surface Polishing of AlSl 316L Stainless Steel Parts Manufactured by Short GHz-Burst Laser Ablation.

Across all tested burst repetition rates, a clear trend is evident: from 0.5 J·mm −2 to approximately 3.3 J·mm −2 , the surface roughness values increase gradually, reflecting minor surface modifications; however, in the range of 3.8 J·mm −2 to 4.3 J·mm −2 , a higher variability is observed across all burst repetition rates, indicating a critical energy threshold beyond which the process becomes less stable.

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