How to choose the right high power fiber laser?

After all, high-power fiber lasers account for the highest cost in the entire device, so many end customers will be the first to understand the differences in configuration, performance, reliability, and after-sales between different lasers. We have done some in-depth information, hoping to let everyone know the system fiber laser to help the terminal customers choose the right type.

The excellent characteristics of Fiber Lasers make more and more end customers pay attention to and consider replacing the original processing methods with Fiber Laser solutions in metal processing. With domestic High Power Fiber Laser, the various core components with large amplitude reduced cost, and therefore the selection of the high power laser threshold begin to disappear.

Single-mode and multi-mode beam quality comparison

In the cutting application, the focused spot has a great influence on the quality of the cut. The core of the single-mode laser is relatively thin, the beam quality is better than multimode, the energy distribution is Gaussian, the intermediate energy density is the highest, and the three-dimensional map is a sharp circle. The shape of the mountain.

The core of a multimode laser is coarser than that of a single mode. The energy distribution is smaller than that of a single mode. The three-dimensional image is an average of a single-mode spot. The three-dimensional image is an inverted cup. From the edge steepness, the multimode ratio The single mode is steep.

Comparison of 1.5KW single mode and 1.5KW multimode laser with the same power

1mm thin plate cutting speed single mode is 20% higher than multimode, the visual effect is similar, but from 2mm, the speed advantage is gradually reduced. Starting from 3mm, the speed and effect of high power multimode laser are very obvious. Reflected, as shown below:

Therefore, the advantage of single mode is thin plate, the advantage of multimode is thick plate, single mode and multimode 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 mountainous. However, the car can also run the mountain, and the off-road can also run the road. Therefore, in the end, the choice of multi-mode or single-mode fiber laser depends on the processing needs of the actual end customer.

How to choose single mode and multi mode

From the perspective of power level discrimination, the laser of 1000W 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-mode configuration of the laser within 1KW is in line with the actual market conditions, and the laser with a power of 1KW 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-mode, and the processing quality must be the first!

At the same time, the single-mode core is generally thin, meaning that the same power laser is transmitted in it. The single-mode core has a larger optical energy load, which is a test for materials, and high-intensity reflection when cutting high-reflection materials. The superposition of light and outgoing lasers makes it very easy to “burn the core” if the fiber material is not tolerated, and it is also a challenge for the life of the core material! Therefore, many laser manufacturers still use multimode in the configuration of high power fiber lasers. Configuration!