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Short-pulsed lasers are of significant industrial relevance in laser drilling, with an acceptable compromise between accuracy and efficiency. However, an intensive research with regard to qualitative and quantitative characterization of the hole quality has rarely been reported. In the present study, a series of through holes were fabricated on a high-temperature alloy workpiece with a thickness of...
Precision drilling with ultra-short pulse lasers (e.g., picosecond and femtosecond) has been advocated to significantly improve the quality of the micro-holes with reduced recast layer thickness and no heat-affected zone. However, a combination of high-power picosecond laser with helical drilling strategy in laser drilling has rarely been reported in previous studies. In the present study, a series...
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