Fiber laser cutting is a popular focus of industrial research and development. In recent years, the technology behind high-power fiber laser generators has matured and improved, leading to a continuously expanding range of applications. The fiber laser cutting machine has become a popular tool for cutting thin plates, and fiber laser generators are gradually replacing traditional CO2 lasers and YAG lasers for several reasons: (1) Lower Cost: The photoelectric conversion efficiency of fiber lasers is around 30%, while the photoelectric conversion efficiency of CO2 lasers is 6-10%, and the photoelectric conversion efficiency of YAG lasers is only 3%. In addition, fiber laser generators have no vulnerable parts, so there is no cost associated with late maintenance.