Figure 8.
Diameter φ (μm) of the crater drilled in a function of distance Δz (mm) of the exposed surface from the focal plane. Curves with exp marking in the legend concern the experiment, point curves with theor marking concern the calculations. A number at the beginning of the curve name denotes the energy of the pulse (μJ). The laser fluence of each curve is ca. 3.5 J·cm−2.