6 February 2012 Beam delivery systems and processing heads for 1μm high brightness laser cutting systems
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Abstract
One critical component of a high brightness Multi-Kilowatt near infrared 2D laser cutting system is the beam delivery fiber and the connected processing head. Within this chain several optical free-space components contribute to a laser power induced thermal focus shift on the work piece resulting in a slower or even unstable cutting process. We present a novel processing head that allows for precise control of the focus diameter and position on the work piece by means of a simple, novel optical system. Further, we will report on the reduction of the laser power induced focus shift in diverse optical elements.
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H. Zimer, H. Zimer, R. Niedrig, R. Niedrig, B. Wedel, B. Wedel, } "Beam delivery systems and processing heads for 1μm high brightness laser cutting systems", Proc. SPIE 8239, High Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications, 82390V (6 February 2012); doi: 10.1117/12.909833; https://doi.org/10.1117/12.909833
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