INVESTIGATION OF THE POSSIBILITY OF REDUCING ENERGY COSTS DURING LASER SCRIBING OF GLASS AND CERAMIC PLATES

Abstract

In the framework of the one-dimensional problem of evaporation of the absorbing layer of the material with the “instantaneous” release of laser pulse energy, the possibility of reducing energy costs when scribing glass and ceramic plates is investigated. A method of scribing is proposed, in which the laser radiation released through the back surface of the plate is returned to the plate using a mirror with a reflection coefficient of ~ 99 %. Optimal modes of plate scribing have been determined. It is shown that with deep scribing, it is possible to reduce energy costs by 1.4 – 1.8 times compared to traditional laser scribing. When the depth of the scribing groove is less than 0.3 of the plate thickness, the use of the considered method is impractical due to the insignificance of the positive effect.