Precise Hole Drilling in PMMA Using 1064 nm Diode Laser CNC Machine

Figure 9

The first-stage temperature distribution; exposure time (s)=2.25, total power (𝑊)=1.82, and surfacetemperature=1.1413e+004. The second-stage temperature distribution; exposure time (𝑠)=2.25, total power (𝑊)=0.2953, and surfacetemperature=1.8518e+003. The third-stage temperature distribution; exposure time (𝑠)=2.25, Total power (𝑊)=0.19, and surfacetemperature=1.2559e+003.