The high-brightness optical fiber laser pointer enables system integrators to realize remote processing. Improve the safety of the remote processing head in operation. And by combining with a scanning head that quickly positions the beam. It can realize remote laser cutting, etching and welding of high thermal conductivity metals such as aluminum and copper, as well as new and lightweight carbon fiber composite materials. High-power, high-brightness fiber lasers have enabled the rapid development of remote laser scanning (RLS) applications. Compared with other technologies, RLS has more flexibility and faster processing speed, and greatly shortens the processing cycle of large-sized workpieces.
Traditional fiber green laser pointer uses fiber coupling technology to couple multiple laser outputs together. As a result, the brightness of the output laser is lower. The Ennite nLIGHT altaTM new generation fiber laser adopts an innovative architecture. By combining the pump diode and driver in a separate pump module, the gain fiber is installed in the configurable gain module, which can output laser power of more than 8kW. The gain module is based on a novel main oscillator / power amplifier (MOPA) design that can achieve high brightness laser output. In addition, Enna laser also uses a reliable integrated retroreflective isolator to protect all modules from the effect of retroreflected light, and can process high-reflective materials at full power, uninterrupted and stable. These two technological innovations have played a vital role in the application of RLS.
The key to the design of the system is the working distance, focal spot size and scanning range of the scanning head. One advantage of using a high-brightness fiber laser is that it can increase the working distance and scanning range, and at the same time can obtain a smaller focal spot size to increase the welding speed and increase the welding penetration. The two commercial RLS scan head products listed in the table (SCANLAB IntelliWELD and IntelliSCAN) demonstrate the benefits of higher brightness lasers (50μm fiber core diameter). It can be seen from this example. The working distance of the scanning head can be increased by 50%. At the same time, the focal spot size can be reduced by 14%. The laser can provide high brightness output up to 8kW.