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Proceedings Paper

Laser beam diagnostics according to ISO and their impact on practical application
Author(s): R. Kramer; H. Schwede; V. Brandl; S. Wolf; O. Märten
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Paper Abstract

The ISO Standard 11146 has joined the various company specific standards into one set of procedures to determine laser beam propagation parameters. Due to the implementation of the standard, a lot of smaller and some critical measurement problems become visible. The main part of beam parameter calculation is the determination of the beam width based on the second order moments of the power density distribution. Due to the mathematical definition, the second order moments are sensitive to incorrect determination of the zero level of the detector. The signal to noise ratio also plays an important role. Other critical points are non-linearity and artifacts of the detector and the optical system itself. An example for an implementation of the ISO 11146 within the design of a real measuring tool is demonstrated. The PRIMES MicroSpotMonitor is a camera-based beam diagnostic system. It is ready to measure automatically even high power beams with dimensions down to the range of several micrometers. The constraints between the demands of the standard and practical application will be discussed.

Paper Details

Date Published: 15 October 2005
PDF: 9 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59622H (15 October 2005); doi: 10.1117/12.639286
Show Author Affiliations
R. Kramer, PRIMES GmbH (Germany)
H. Schwede, PRIMES GmbH (Germany)
V. Brandl, PRIMES GmbH (Germany)
S. Wolf, PRIMES GmbH (Germany)
O. Märten, MOC (Germany)

Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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