That’s why it’s crucial for the development team at Messer Cutting Systems to know the exact behavior and parameters of the laser beam. Since for this purpose the company uses Ophir BeamWatch, a non- contact measuring system, there are no limitations on the laser power that one can measure. For the first time, measurements taken at video frame rates allow the focus shift to be temporally resolved and displayed in near-real time. This is precisely the point that most interests the develo- pers at Messer Cutting Systems: With their “Focus Shift Compensation,” they’ve developed an algorithm to minimize the thermal focus shift in the switch-on process, which optimizes the quality of the laser cut. Case Study Laser Exact cuts with a laser: recognizing and compensating for thermal f

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