Marking materials such as metals and plastics is more user-friendly with the MOPA laser, a new addition to Trotec Laser’s product portfolio of Galvo marking lasers.
More legible results are achieved, with the ability to mark anodised aluminium in black or create reproducible colours on steels.
Qualitatively equivalent markings produced with the MOPA laser are often faster than with the conventional fibre laser, while the advantages of the conventional laser sources (maintenance-free, long life, air-cooled, economical purchase price, etc.) remain unchanged.
With the MOPA fibre laser sources, users can variably adjust the pulse duration and reduce it to a few nanoseconds compared to conventional fibre laser sources. Due to the short pulses as well as the lower pulse energy, the material is heated less.
For some plastics, the MOPA fibre laser can make full use of its strengths, like short pulses and thereby less material heating. Plastics that are difficult to mark with a conventional fibre laser can be laser-marked with the MOPA laser in a clearly more homogeneous manner, with less burning and foaming.
Especially on dark plastics, the shorter pulses often produce ‘vivid’, lighter markings, which results in a higher contrast. Some plastic parts, which could not be adequately marked with a fibre laser before, can now be laser-marked in a clearly (machine) readable manner.
The MOPA laser also offers some advantages for metals. Marking (natural anodised) aluminium in black is thus possible. This process is also used to mark high-quality smart phones. A faster and corrosion-free annealing on steel is possible.
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