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Proceedings Paper

YAG-slab laser cutting performance
Author(s): Thomas C. Sidler; Juerg Steffen
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Paper Abstract

The application of YAG-SLAB lasers operating in fundamental and low order mode to metal cutting has been investigated. The high beam quality and the relative insensitivity of the beam shape to average power variations make slab lasers strong candidates for high precision cutting applications. The advantage of very fine focusability (focused beam diameters down to 30,um) and high intensity (100 MW/cm2) for cutting applications are shown. Three limiting factors are derived for high quality cutting : The threshold intensity for efficient laser beam absorption, the depth of focus of the laser beam and the limited aspect ratio (cutting thickness to kerf width ratio) achievable by material removal. Experimental results of stainless steel cutting with fundamental and low order mode beams are given for material thicknesses of 0.5 mm to 1.5 mm. The cuts show kerf widths of 35im (aspect ratios of 21:1) and roughness values of Ra 1.6 pm for 0.8 mm thick steel samples.

Paper Details

Date Published: 1 August 1990
PDF: 12 pages
Proc. SPIE 1277, High-Power Solid State Lasers and Applications, (1 August 1990); doi: 10.1117/12.20588
Show Author Affiliations
Thomas C. Sidler, Asulab SA and Lasag AG (Switzerland)
Juerg Steffen, Asulab SA and Lasag AG (Switzerland)

Published in SPIE Proceedings Vol. 1277:
High-Power Solid State Lasers and Applications
Clive L. M. Ireland, Editor(s)

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