Transfer Energy in the Interaction of an Optical Surface with a Polishing Disperse System

Abstract

The study of the interaction mechanism of an optical surface with a polishing disperse system during polishing showed that the energy transfer between them occurs according to the Förster mechanism. With resonance energy transfer from the particles of the dispersed phase of the polishing system to the surface to be treated and from the material being processed to the particles of the polishing powder, with a decrease in the spectral separation between them, the energy of the sludge particles and wear particles decreases, and the energy transfer efficiency increases. The spectral separation was characterized by energy mismatch, 2.8–4.0 meV for sludge particles and 2.8–12.2 meV for wear particles. The spatial separation between the treated surface and polishing powder particles was estimated as the arithmetic mean deviation of the polished surface profile, 5.6–8.0 nm. A decrease in the spatial and spectral separation between the material being processed and polishing powder particles increases the size of sludge particles and wear particles, causing a deterioration in the roughness of optical surfaces. The results of a theoretical calculation of the productivity of polishing optical materials coincide with the experimental results with a deviation of 2–7%.