Correction to: geometry assessment of ultra-short pulsed laser drilled micro-holes

Abstract

The original article contained a mistake. Section 1 Introduction& The unit of power density (W cm s −2 ) is incorrect.Correctly, it must be W cm −2 . Section 2.1 Material and machine & The dash in 515-nm is not correct. Correctly, it must be 515 nm.Section 2.2 Circular path laser drilling & The b in the formula symbol of hatching distance lb. is not subscripted. Correctly, it must be l b . & The path of the laser beam is termed by d hatch . Correctly, it must be d path as in Fig. 1. & The total diameter of the surface irradiated with the laser is termed by d hole . Correctly, it must be d as in Fig. 1. & The eq. (1) is incorrect. Correctly it must be d path = d − d foc Caption in Fig. 1.The FOV in the formula symbol of the length of the field of view lFOV is not subscripted. Correctly, it must be l FOV . Section 3.4 Through-hole of 300 μm depth. The dash in 300-μm is not correct. Correctly, it must be 300 μm.