Fig. 2. Femtosecond laser patterning of glass diffusers. Microscopic images from the top and side views of the microstructured ripples and corresponding surface roughnesses. (a–c) Samples from h1 to h3 were textured by using circular polarization with three different hatch direction, i.e. horizontal, vertical and at 45°, while the polarization was changed to linear for (d–f) samples from h4 to h6.
