By quantifying how a beam departs from a perfect Gaussian TEM00, the beam propagation ratio M2 is a meaningful parameter to assess the quality of a laser beam. The reference method for its measurement is described in the paragraph 9 of the ISO 11146-1 standard. Based on several intensity acquisitions at different positions along the propagation axis this procedure is very time consuming and strongly depends on the operator. Moreover it cannot deliver real time data, even when automated and hardly applies to fluctuating or low repetition rate lasers...
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Lambda Photometrics is the leading UK Distributor of Characterisation, Measurement and Analysis solutions with particular expertise in Instrumentation, Laser and Light based products, Optics, Electro-optic Testing, Spectroscopy, Machine Vision, Optical Metrology, Fibre Optics, Microscopy and Anti-vibration Tables & Custom Solutions.
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Phasics Laser Beam Analysis
High resolution wavefront measurement. Based on a patented technology, Phasics wavefront sensor simultaneously provides both phase and intensity maps of unrivalled high resolution. It combines to the SID4 software to deliver a complete diagnostic of the laser beam: wavefront aberrations, laser beam parameters, beam profiles, M2 beam quality parameter… It is compact and it easily positions at any point of the laser chain as it directly measures diverging beam.