Effect of physical parameters of laser radiation on the process of weld formation in transparent dielectrics

Abstract

The article determines the influence of pulse duration, energy density and focusing parameters on the process of formation of a weld of transparent dielectrics. A comparative analysis of laser welding of borosilicate and quartz glass with different pulse durations and energies of picosecond and femtosecond fiber lasers was carried out. Basic regularities of weld shape change depending on pulse duration and energy are obtained. The combination of physical parameters of laser radiation and focusing allows welding along gaps up to 6 μm.

Effect of burst mode modulation ultrashort pulse laser on the laser processing transparent dielectrics

“…In previous studies by the authors of this publication, a study was conducted on the influence of the geometry of the weld on the size of the welded gaps [15]. It is noted that in order to increase the size of the welded gaps, it is necessary to obtain a certain geometry of the modification zone, which forms the welded joint.…”