Difference between single module and multi-module laser source

Laser source have a great impact on the cutting performance of fiber laser cutting machines. So what is the module integration method for fiber laser source? And what’s the difference between single module and muti-module laser source.

The module composition of fiber laser is divide into single module and multi-module. In the cutting application, the focus spot has a great influence on the quality of the cut. The core of the single module laser is relatively thin, the beam quality is better than multi-module. And the energy distribution It has a Gaussian distribution with the highest intermediate energy density. And the three-dimensional map is a sharp mountain peak.

Comparison of 1.5 KW single module and 1.5 KW multi-module laser with the same power

1 mm thin plate cutting speed single mode is 20% higher than multi-module, the visual effect is similar. But from 2 mm, the speed advantage is gradually reduce. Starting from 3 mm, the speed and effect of high power multi-module laser are very obvious.

Therefore, the advantage of single module is thin plate, the advantage of multi-module is thick plate, single module and multi-module are not compared with each other. They are all a configuration of fiber laser. It is like a car. The car is suitable for highway and off-road suitable for mountain. However, the car can also run the mountain, the off-road can also run the road, so the choice of multi-module or single-mode fiber laser depends on the actual end-user processing needs.

From the perspective of power level discrimination

The laser of 1000 W or less is mainly due to its low energy, and the thickness of the main processing material is biased toward the thin plate. Therefore, the single module configuration of the laser within 1000 W is in line with the actual market conditions, and the laser with a power of 1000W or more should be thin and thick. From the perspective of the entire processing industry, the improvement of processing quality is a rigid demand, which cannot be compromised. Therefore, many high-power lasers will not consider single module, and the processing quality must be the first!