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Proceedings Paper

Automated beam monitoring and diagnosis for CO2 lasers
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Paper Abstract

The usage of a quality management, in combination with a standard certification, is nearly inevitable for today's industrial manufacturing. In laser materials processing, a periodical beam diagnosis is to be executed as a quality-maintaining measure with any change of the workpiece geometry to guarantee an unambiguous allocation of the beam quality factors. Otherwise changes in the beam quality, caused by pollution, aging or defect of the optical components, remain unidentified for a long time, leading to impairments of the treatment quality or even costly down-times. As a solution a diagnosis system is integrated into a laser system. Data sources like measuring instruments, sensors and laser control transmit the diagnosis data to a diagnosis PC. A user-friendly software, based on Fuzzy algorithms, enables the operator to retrace changes in the beam quality to failures of the laser system. All diagnosis data are getting archived in a databank. The access to the archived data through the World Wide Web allows remote diagnoses. With the help of the beam diagnosis system failures can be discovered in advance, and losses of production can be avoided. The gained transparency of the beam characteristic values facilitates the integration of the laser system in the quality management. A prototype installation has been realized and latest results will be demonstrated.

Paper Details

Date Published: 6 June 2002
PDF: 10 pages
Proc. SPIE 4629, Laser Resonators and Beam Control V, (6 June 2002); doi: 10.1117/12.469485
Show Author Affiliations
Stefan Mann, RWTH Aachen (Germany)
Lars Boeske, RWTH Aachen (Germany)
Stefan Kaierle, Fraunhofer-Institut fuer Lasertechnik (Germany)
Ernst-Wolfgang Kreutz, RWTH Aachen (Germany)
Reinhart Poprawe, Fraunhofer-Institut fuer Lasertechnik and RWTH Aachen (Germany)


Published in SPIE Proceedings Vol. 4629:
Laser Resonators and Beam Control V
Alexis V. Kudryashov, Editor(s)

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