In this paper, we present the main results for the theoretical, numerical and experimental analysis of a new method to measure the roughness of metal surfaces. The requirements for a waveguide optical resonator, which is the main optical node of the device implementing this method, have been developed. A comparative analysis of two different designs of an optical node is performed. The energy spectra of the roughness of various surfaces were measured. As a result of the research, the main advantages of the method under consideration and practical recommendations are provided to improve the design of the device that implements this method.
The results of measurements of surface roughness of fluorine-containing glasses are presented using a new methodology for gradient waveguide propagation of the laser radiation.
This new method also allows the measurement of the attenuation of optical radiation in the surface layer of glass. The development of multiple experimental investigations confirm the advantages of the method - high sensitivity and simplicity in development.