12kw fiber laser has become the new industrial laser standard being widely used in sheet metal cutting, laser cladding, laser welding and many other industrial applications. The most common failure associated with such high-power fiber laser is the thermally induced component failure, including the laser chip failure resulting in power degradation, the high-power pump diode failure from insufficient cooling to fiber component failure from overheat, etc. Here we present an innovative active air cooled 12kw fiber laser system with the build-in closed-loop- controlled waterless cooling system, not only improve the component and the overall laser reliability but also improve the overall system electric-optical efficiency by as much as 30%.
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