Optics and Photonics

Beam Steering for High Power Laser Cutting

maximum precision for display manufacturing applications

Display manufacturing imposes highest demands on the cutting process of hard glasses and OLED screens. To achieve the required throughput and precision, high power laser cutting is the most suitable technology to process such complex materials. Even smallest production defects are critical: Not only because the used raw materials (as e.g. sapphire windows for camera protection) are expensive, but also because the workpieces may already include millions of sub-µm integrated circuits (as e.g. for OLED displays). 

Therefore the laser beam must hit the workpiece with highest repeatability. This can only be ensured by a highly precise beam steering system, guiding the light from the laser source to the cutting head. To prevent misalignments - caused by e.g. thermal expansion - such systems require ultra stable positioning stages to ensure milli-degree precision in optics alignment. 

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