Enhanced machining of steel using femtosecond pulse pairs
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- Liebig, C.M., Srisungsitthisunti, P., Weiner, A.M. et al. Appl. Phys. A (2010) 101: 487. doi:10.1007/s00339-010-5885-8
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In this study we report on the ablation of steel using femtosecond double-pulse trains. Double-pulse trains with pulse-to-pulse separations between 1 ps and 1 ns were used to machine micro-channels in a steel sample. The depths of the laser-ablated channels were measured to characterize the efficiency of the ablation process. Results show that using a double-pulse train with an optimal separation time dramatically increases the ablation depth and does not deposit unwanted material that may require additional post-processing of the machined surface.