Figure 4

SEM micrographs of multi pulses damage spots at 3 μm. The damage spots at P = P _cr  = 10 mW (a) and P = 30 mW (b) for As₂S₃, and at P = P _cr  = 5 mW (c) and at P = 30 mW (d) for As₂Se₃. (e) The beam intensity profile and the depth profiles of the damage craters at average laser power of 30 mW.