Measurement of the roughness of smooth glass surfaces using method of planar gradients optical waveguides

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. © 2018 SPIE.