AFM and light scattering measurements of optical thin films for applications in the UV spectral region

Combination of atomic force microscopy and scattering measurements allows controlling the microstructure of substrates and optical thin films in the nanometer scale and of surface homogeneity over large areas. Results are presented of measurements on superpolished and conventionally polished substrates as well as on thin film fluoride coatings, demonstrating the capabilities of these measurement techniques.