Figure 2
Comparison of the groove state by means of AFM measurements on a 600 lines mm−1 grating with 2° blaze angle. (a) Groove profile before (red curve) and after coating with 30 nm Au (black curve). (b) Micro-roughness before and after coating as measured on one groove section for a field of view of 8 µm × 1 µm. These measurements were performed with a Bruker-SIS-Ultraobjective AFM. |