In pulse mode, the laser output is concentrated in small pulses. Pulse mode laser equipment provides pulses and small pulse duration with sufficient energy for micromachining of a given material. The duration of the small pulse can minimize the heat flowing to the surrounding material. The length of laser pulses can range from milliseconds to femtoseconds.
The peak power is related to the duration of the laser pulse, so the pulse laser can obtain a much higher peak than the continuous wave.
Laser processing mainly involves the interaction that leads to the ablation of substrate materials. The energy transfer that occurs depends on the material and laser properties. As influencing factors, laser characteristics include peak power, pulse width and emission wavelength. The consideration of the material is whether it can absorb laser energy through thermal and / or photochemical processes.
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