PULSE LASER DEVICE, TRANSPARENT MEMBER WELDING METHOD AND TRANSPARENT MEMBER WELDING APPARATUS

摘要

An inexpensive pulse laser device that outputs a laser pulse capable of welding a transparent member is provided. There is provided a pulse laser device including: a laser light source 1 that outputs a repeated pulse laser; a demultiplexer 2 that demultiplexes the pulse laser output from the laser light source 1 into two pulse lasers; first pulse train generation means 3 that generates a first pulse train by changing at least a peak power and/or a pulse width of one of the two pulse lasers demultiplexed by the demultiplexer 2; and a multiplexer 4 that multiplexes the other of the two pulse lasers demultiplexed by the demultiplexer 2 and the first pulse train generated by the first pulse train generation means 3, in which a pulse laser in which a low-peak power pulse laser is superimposed on a high-peak power ultra-short pulse laser is output.