Coherent intros 2–8 kW fiber laser for welding applications

Nov. 11, 2019
The fiber laser's dual fiber output delivers increased throughput in cost-sensitive, high-volume welding applications, particularly in automotive manufacturing.
Coherent High Light Fl Arm 5dc974f017a77

The HighLight FL-ARM with Fiber-Fiber-Switch from Coherent (Santa Clara, CA) is a high-power (28 kW), dual-fiber-output fiber laser that can sequentially power two separate workstations or processes. Dual fiber output delivers increased throughput in cost-sensitive, high-volume welding applications, particularly in automotive manufacturing, such as welding of doors, hang-on parts, ultra-high strength steel components, and aluminum body frames. Alternately, the second fiber can act as a redundant backup for the first, thus minimizing service downtime when required.

The laser implements power sharing through use of the company’s Fiber-Fiber-Switch technology. The process fibers themselves use the company’s Adjustable Ring Mode configuration, comprising a dual-core delivery fiber that produces a central spot surrounded by another concentric ring of laser light. The power levels in the center and the ring can be independently adjusted on demand (from 1% to 100%) and switched at a rate said to be 1000X faster than competing products; it can also be independently modulated. This arrangement provides improved control of keyhole and melt pool stability during the welding process. Its multi-stage backreflection immunity system enhances laser reliability and lifetime, and enables safe processing of highly reflective materials, including brass, copper, and aluminum.

This laser is the first new product to be introduced by the recently created Coherent Center of Excellence for fiber lasers in Tampere, Finland.

For more information, please visit coherent.com.

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