Single Module or Multi-Module
The advantage of the Single Mode is that its PHOTON Monochromatic light spot is smaller than a Multi Mode PHOTON Monochromatic light spot, making it very suitable for cutting thin sheet.
A Single Mode Laser Fibre core diameter is small (14um), the energy is Gaussian distribution, the focal spot is small, with a high energy density, under the same Laser Kw power, the energy density is more than 4-10 times that of the Multi Mode spot,
and the heat-affected zone (HAZ) is small, especially for the high-reactive alloy’s (aluminum, copper)
For 3/6/12kw machine, the Single Mode technology is well proven.
The advantage of Multi Mode is that when one Mode is damaged, the other Modes can keep the Fibre Laser machine working.
A Multi Mode Fibre cable is used to combine the Photonic Monochromatic light from more than one PUMPED solid gain medium, the spot quality is not as good as that of Single Mode Fibre cable,
therefore, the Multi Mode is more suitable for machines above 12kw that are generally cutting thicker materials where spot size definition may not be so critical.
Therefore, the advantage of selecting a single module is its impact on cutting speed for thin plate,
the advantage of multi-module is thick plate
