What is the difference between power feedback and current feedback of laser welding machine?

Current feedback is to control the current to stabilize the single pulse energy of laser, which belongs to a relatively backward technology and has little influence on the stability of laser, mainly instability.

The best negative feedback method at present is energy negative feedback. The energy of each beam of light is detected by the energy negative feedback detection device, and then it is corrected to achieve the stability of each pulse energy. This is a patented technology, and only Win-Win Laser has this patent in China.