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Abstract

An assembly of three monitor systems is described which can perform quantitative measurements of CO-2 laser beam characteristics during machining operations at powers in excess of 5 kW. Two microprocessor controlled monitors measure the near and far field intensity profiles and sample beams. These beams are scanned over a stationary single element detector by being optically moved around 18 equally spaced radii. The detector output is digitized into 288 pixels - profile and processed to give parameters describing the beam's intensity profiles, pointing stability and divergence. The third monitor measures laser power, the present frequency range being DC - 1kHz.

Additional information

Authors: TRAVIS A J B CULHAM LABORATORY, ABINGDON (UK), CULHAM LABORATORY, ABINGDON (UK)
Bibliographic Reference: 5TH GCL SYMPOSIUM, OXFORD (UK), AUG. 20-24, 1984. PUBLISHED IN INST. PHYS. CONF. SER. NO. 72, PP. 367-372
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