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Third Generation Sweet Spot Generation

Rofin Baasel Lasertech has released the third generation of its sweet spot resonator technology to the 200W power level.

Excess heat load within a solid state laser, particularly Nd:Yag systems, creates a thermal lens which is dependent on the input power level. This induced thermal lens can affect the beam quality of the laser output. Differences in laser beam quality can produce a variation in penetration depth during the course of a weld. Rofin's patented sweet spot resonator ensures that the characteristics of the first laser pulse are the same as the last so preventing this variation in weld penetration depth and creating a more even weld profile.

The new Integral provides 200W laser power with all benefits of the new sweet spot generation - combined with the concept of manual welding laser of Rofin's Select: the system is - just by a switch - an ergonomically-optimised, manual welding laser, a joystick-controlled deposit welding system or a high-precision CNC system.

The large working chamber provides space for parts with up to 500mm width. The xy table with z axis moves workpieces weighing up to 500kg with utmost precision in all three dimensions. The patented optical system, which can be swivelled around two axes, enables the processing of vertical surfaces, undercuts or deep grooves without swivelling or tilting the workpiece. All these features make the Integral qualified for practically all laser welding applications in precision engineering, electronics, thin sheet processing or even in the tool and mould industry.

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