%0 Journal Article %A He, Chao %A Bühring, Jannik %A Gillner, Arnold %T Helical drilling of three-dimensional conical converging-diverging nozzle in steel using ultrashort laser pulses %J Procedia CIRP %V 74 %@ 2212-8271 %C Amsterdam [u.a.] %I Elsevier %M RWTH-2018-227742 %P 305-309 %D 2018 %B 10. CIRP Conference on Photonic Technologies %C 3 Sep 2018 - 6 Sep 2018, Fürth (Germany) Y2 3 Sep 2018 - 6 Sep 2018 M2 Fürth, Germany %F PUB:(DE-HGF)16 ; PUB:(DE-HGF)8 %9 Journal ArticleContribution to a conference proceedings %U <Go to ISI:>//WOS:000548219200064 %R 10.1016/j.procir.2018.08.120 %U https://publications.rwth-aachen.de/record/731831