Process regimes during welding of glass by femtosecond laser pulse bursts

Various process regimes were observed during micro-welding of glass with bursts of ultrashort laser pulses. Two major welding regimes and various sub-regimes were identified for two different materials. The radiation emitted by the laser-induced plasma was used to monitor different regimes that characterize glass micro-welding. A comprehensive understanding of the various process regimes can be exploited to use the regimes according to their specific advantages, especially for industrial applications.