Laserline presents 3kW blue diode laser at Laser World of Photonics

At Laser World of Photonics 2022, Laserline presented the world’s first blue diode laser with 3kW CW output power.

The laser is especially designed for welding, cladding and additive manufacturing of copper components. It is a further milestone in the power development of blue high-power diode lasers.

Back in 2019, Laserline had already presented the world's first blue CW diode laser with up to 1kW CW output power, whose power was subsequently raised to 2kW just a year later. The blue 3kW diode laser that was showcased in Munich displays the highest performance class of industrial lasers in the blue wavelength spectrum to date, according to Laserline.

In line with the 1 and 2kW Laserline diode lasers, the new laser operates at a wavelength of around 445nm. This spectral range is absorbed much better by non-ferrous metals such as copper and gold compared to infrared radiation. Among other benefits, this allows the heat conduction welding of copper components close to the surface, along with more energy-efficient and climate-friendly processes.

Increasing the CW output power to 3kW now makes it possible to have additional application options. In joining and cladding processes, much faster welds and higher deposition rates can be achieved. In the case of keyhole welding of electrical conductors such as copper hairpins, larger cross-sections can be handled with moderate heat input using blue lasers only. Where hybrid solutions combining blue and infrared lasers continue to be required, less infrared energy is needed today. This clearly optimises the operation costs and the CO2 balance of the applications.

Furthermore, the new laser power class enables a more efficient additive manufacturing of large and volume-rich copper components.

At the Laserline booth, these new application possibilities were discussed in detail before being demonstrated with the help of different welding and cladding samples.