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Proceedings Paper

Influence of the focusing element for CO2 laser beams on monitored process signals
Author(s): Stephan Fazeny; Andreas Penz; Markus Bohrer; Dieter Schuoecker
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Paper Abstract

In typical optical sensor setups for CO2 laser material processing scraper mirrors or beam selectors (ZnSe mirrors) are used to allow sensor positions which have a coaxial path for both the laser beam and the monitored visible or near- infrared signal. Calculations and experiments have shown a vital influence of the focusing element for the laser beam on the measured signal. Critical topics are the distance between focusing element and monitored process, as well as the dependence of focal length on wavelength.

Paper Details

Date Published: 25 September 1997
PDF: 9 pages
Proc. SPIE 3100, Sensors, Sensor Systems, and Sensor Data Processing, (25 September 1997); doi: 10.1117/12.287758
Show Author Affiliations
Stephan Fazeny, Technical Univ. Vienna (Austria)
Andreas Penz, Technical Univ. Vienna (Austria)
Markus Bohrer, Wild Austria GmbH (Austria)
Dieter Schuoecker, Technical Univ. Vienna (Austria)

Published in SPIE Proceedings Vol. 3100:
Sensors, Sensor Systems, and Sensor Data Processing
Otmar Loffeld, Editor(s)

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