Figure 3
From: Generation of Scratches and Their Effects on Laser Damage Performance of Silica Glass
Surface micro-morphology of samples A, C & E.
(a) surface roughness of sample A is 1.19 nm without scratches; (b) surface roughness of sample C is 1.08 nm with slight ductile scratches and the depth of scratches is ~20 nm; (c) roughness of sample E is over 5.19 nm with much deeper brittle and ductile scratches and the depth of the scratches is over 300 nm; (d) sample E has a lower transmittance than sample A&C over the UV-Vis-IR band; (e) the surface roughness and transmittance are strongly affected by brittle scratches.
