Laser Micro Hole Drilling - Improving Quality, Density

Controlling the shape of the taper from entry to exit to achieve high aspect ratios depends on precisely controlling the focus as the beam moves through the surface of the material and becomes more difficult as thickness increases. Drilling thousands of holes with the smallest diameters, needs the reduction for laser spot sizes. Other factors include beam shaping and careful selection of the laser wavelength, as well as ensuring that the motion system can provide precise placement and accuracy.