According to an announcement by Raycus Fiber Laser’s official WeChat account on September 3rd， the company’s high-power project team has recently achieved a significant technological breakthrough. By employing a semiconductor direct pumping method alongside a MOPA structure and utilizing their self-developed circular modified ytterbium-doped fiber， Raycus has successfully developed a kilowatt-class fiber laser that is directly pumped by LD and operates in a near-single-mode configuration.
This laser achieves an output power of 10.1kW with a beam quality M² value of just 1.13. This sets a new world record， establishing it as the kilowatt-class fiber laser with the optimal beam quality globally to date.
The M² value of beam quality is a critical metric for evaluating laser performance. A value closer to 1 indicates that the beam’s energy is more concentrated and its transmission losses are lower， which translates to higher application value in fields like high-end manufacturing and scientific research.
The project team achieved efficient energy conversion through semiconductor direct pumping technology and precisely controlled the beam mode using their self-developed circular modified ytterbium-doped fiber. This approach has overcome the technical bottleneck where “high power” and “high beam quality” are difficult to reconcile， successfully addressing the industry challenge of beam quality degradation during power enhancement in kilowatt-class fiber lasers.
This achievement not only fills a technological gap in single-mode kilowatt-class fiber lasers internationally but will also provide crucial equipment support for applications such as aerospace component processing， high-precision material cutting， and laser-induced fusion research. It propels China’s high-end laser equipment towards higher precision and efficiency， injecting strong momentum into the indigenous upgrading of the laser industry.
