Fibre Coupler Suitable for Welding Applications

JK Lasers has released the Mode Converter Fiber Coupler (MCFC), which is suitable for welding applications. The MCFC takes a Gaussian-profile single-mode fibre input from any of the JK fibre lasers and couples it into a JK luminator fibre. The output from the JK luminator fibre has a uniform 'flat-top' beam profile and a beam diameter of 150-600um depending on the configuration selected by the user. Focused spot sizes in the range of 60-1,500um can be selected by use of the appropriate JK luminator process tools.

The MCFC can bring processing advantages to welding applications where the profile and small spot size of the Gaussian beam are not optimal, such as butt welding parts with fit-up tolerances larger than the Gaussian spot size, or thin foil welding, where high-intensity on-axis can lead to burn-through in the weld centres. Having a detachable output fibre, with JK Lasers' Plug-In Pre-Aligned (Pipa) technology for rapid changeovers, allows the MCFC to offer increased versatility to the user from the JK fibre laser, at a lower cost than a separate laser.

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