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High beam quality can be achieved by accurate adjustment of the mechanical and microoptical components in the manufacturing process of high power diode laser stacks. A characterization device which can determine these parameters by automatically measuring the radiation properties of high-power diode-laser stacks has been developed. The result is a mechanically robust, easy to use characterization device of high reliability suited for applications in quality control and product optimization

Within the EUREKA-project "CHOCLAB" a workshop was organised, where several panners analysed the beam of an industrial CO2 laser device. The goal was to qualify the ISO 1 1 146 standard by using different measurement techniques. This paper compares the results of the determination of the beam propagation factor and beam widths.The following test methods for measuring the beam width were applied: determination of the power density distribution with a rotating pinhole device and subsequent evaluation of beam widths, determination of the power density with a pyroelectric camera and subsequent evaluation of beam widths, moving knife edge method.For the measured data various methods of evaluation were used. These include data processing with different filters, evaluation of averaged power density distributions as well as different algorithms for curve fitting.Despite the different methods of measurement and evaluation the results showed reasonable agreement. This proves the applicability of the ISO 1 1146 standard to an industrial CO2 laser device.

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