1Institute of Physics of Rennes;
UMR CNRS 6251;
University of Rennes 1;
Campus Beaulieu;
Rennes;
France 2Institut Universitaire de France-IUF;
Paris;
France;
Institute of Physics of Rennes;
UMR CNRS 6251;
University of Rennes 1;
Campus Beaulieu;
Rennes;
France;
Optical; Micro-Resonators; Quality; Factor; Origin; Atomic; Force; Microscopy; Surface; Analysis; Scattering; Loss;