Linearly polarized fiber lasers have many applications, such as sensing, nonlinear frequency conversion, and coherent or polarization beam synthesis. To obtain a linearly polarized fiber laser, a polarizer can be used at the output end or within the fiber laser cavity to select a single polarization

In 2014, fiber laser machine becomes popular in the market. At that time 500w fiber laser is the hot fiber laser source products. In the next year 1000w and 1500w fiber laser machine becomes the main stream. At that time most of the fiber laser manfactures belived 6kw fiber laser machine can fulfil 

In recent years, kilowatt-level lasers have gradually become more widespread. The industry's focus has always been on the output power, beam quality, and light-to-light conversion efficiency of the lasers, but it often overlooks the hidden core process that determines the life and death limit of the