The BM10.6 laser beam sampling system from Precision-Optical Engineering provides noninvasive monitoring of high-power CO2 lasers in materials processing applications. This water-cooled device is based on the use of single-point diamond turning to produce a weak diffraction grating on a copper substrate. It can be customized for particular optical systems by varying the proportion of the beam or the angle of the outcoupled sample. Typical sampling is 0.0005 of the input beam. The company says use of this system does not affect the primary function of the beam, and it can be used continuously for beams up to 10 kW.