Fiber laser module is divided into single-mode and multi-mode. In cutting applications, the focus spot has a great impact on the quality of the cut. Single-mode lasers have a thinner core, better beam quality than multi-mode, and energy distribution. It has a Gaussian distribution with the highest energy density in the middle. The three-dimensional diagram is a sharp mountain peak.
The core of a multimode laser is thicker, the beam quality is worse than that of a single mode, the energy distribution is evenly compared to that of a single mode, and a three-dimensional image of an inverted cup. From the perspective of steep edges, the multimode ratio Single mode is much steeper.