In straightforward terms.
A laser pulse period is composed of the time of laser energy output and the time of energy output silence. Laser duty is the ratio of the laser energy output time to the overall pulse time.
In a continuous laser output formed by numerous pulse cycles, when the average power is the same, the Laser duty of the laser pulse is small, then the peak power will be large.
At this time among each cycle, the laser energy output time becomes shorter, the silent time becomes longer, and the energy at each pulse irradiation becomes higher.
This makes the processing ability of melt depth enhanced, and at the same time, because the silent time becomes longer, the time of heat dissipation in each cycle also grows, so the ability to suppress overburning and melt loss is also enhanced accordingly.
Article written by XING Laser