For short pulses and lower pulse energy, the material is e.g. heated less and the area of the heat affected zone is reduced. This results in more advantages and possibilities for laser marking metals and plastics:
Less burning/melting in the edge area of metal engravings
Less heat development during annealing markings on metal, which leads to a better corrosion behavior
Creation of reproducible annealing colors on stainless steel
Black marking of anodized aluminum
Controlled melting of plastics
Less foaming with plastics
More homogeneous and sometimes higher-contrast markings on some plastics
The advantages of the conventional fiber laser sources remain unchanged:
long service life
economic purchase price
Which color we can mark?
Although mopa laser can do color on stainless steel, it does’t mean it can do all color. Mopa laser can only do simple color like blue, green, pink, purple etc. As for other complex color, mopa laser also can’t do it.
What materials we can do?
Mopa fiber laser can mark colors, but not means it can do it on all metals. Now mopa laser can only mark color on stainless steel, no any other material.
Same as normal fiber laser, mopa laser can do all same work, and it have more wide application. Also it have some advantage then normal laser. We know plastic is complex and not easy on laser marking. Due to mopa laser have adjustable pulse width, it have wide application on plastic marking then normal laser.
Except plastic and color marking, mopa laser also can do black color on anodized aluminum. Now so many product is anodized aluminum, such as phone case, mobile power etc.