With the increasing popularity of fiber lasers in metal sheet metal cutting and welding applications, users are gradually aware of a weakness of fiber lasers: they are easily damaged by back-reflected laser light from metal workpieces. If the laser pointer back reflection protection is not strong enough, even if the high-power QBH or QD transmission fiber designed to withstand the kilowatt-level back reflection and stripping the fiber cladding, the back-radiated laser beam will pass through the fiber core of the transmission line It is reflected back inside the fiber laser.
Even technology-leading fiber laser manufacturers have experienced various painful lessons. System integrators have also realized that laser fiber combiners or laser modules will be damaged. Based on the company's many years of experience in the field of high-power industrial lasers, the new CF series lasers already contain advanced back reflection prevention technology and good dispersion of various back reflection lasers. The proprietary mode stripping technology makes the back reflection laser The beam is stripped off and the disturbing light is safely dissipated at the critical point of the laser.
This complex and exquisite back reflection technology has been tested, and its robustness has been confirmed. In the kilowatt optical fiber amplifier, it has greater sensitivity to the back reflection green laser pointer. Incorporating these back reflection protection schemes in the new CF series fiber lasers has proven its unparalleled performance in cutting and welding a variety of highly reflective metal materials with a thickness from <0.5mm to a thickness of 25mm. Compared to the usual performance of third parties, and depending on the materials and settings, fiber lasers have up to 3 to 30 times the resistance to back reflections that cause focus errors due to their special optical configuration.
In particular, the red laser pointer system combined with these protection schemes has demonstrated that millimeter-level focus position deviation errors are allowed in a large number of cutting brass and red copper tests. Compared with other fiber laser manufacturers, it shows a smaller focus position offset error (+/-); when operating a CF laser combined with a unique proprietary protection scheme, it has demonstrated the reliability and almost no failure of the laser Performance.