Kurtosis as a tool parameter for laser welding

Marcus Scholl; Gerd Herziger

doi:10.1117/12.206977

17 April 1995 Kurtosis as a tool parameter for laser welding

Marcus Scholl, Gerd Herziger

Proceedings Volume 2375, Beam Control, Diagnostics, Standards, and Propagation; (1995) https://doi.org/10.1117/12.206977
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

The Kurtosis is introduced as a new tool parameter to characterize the laser beam with respect to the requirements of materials processing with lasers. Especially laser welding shows that the conventional laser parameters beam radius and beam quality are not sufficient to describe the processing result appropriately. The possibility to adjust the Kurtosis as a tool parameter independent of beam radius and beam quality is demonstrated and the design of appropriate optical systems for adjustment is discussed. Experimental investigations and diagnostic measurements for CO₂-laser beams as well as the results of welding experiments performed with various differently adjusted Kurtosis curves along the beam divergence confirms the discussion. Especially the influence on the welding seam geometry and the welding depth are discussed in detail.

Citation Download Citation

Marcus Scholl and Gerd Herziger "Kurtosis as a tool parameter for laser welding", Proc. SPIE 2375, Beam Control, Diagnostics, Standards, and Propagation, (17 April 1995); https://doi.org/10.1117/12.206977

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