Laser-Induced Damage Initiation and Growth of Optical Materials

Figure 4

Damage craters produced in fused silica by 355 nm, 7.5 ns pulse with 45 J/cm² fluence: (a) large crater with melted central core and fractured periphery; (b) magnified image of the central core; (c) cross-sectional profile of the crater shown in (a); (d) small craters produced by melting and evaporation [44].

(a)

(b)

(c)

(d)