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Proceedings Paper

Beam Quality Evaluation Of A High Power Fast Axial Flow CO2-Laser
Author(s): Peter Muys; Jan Bastiaensens
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Paper Abstract

we present the results of a systematic evaluation of the main optical characteristics of our lasers. The tests were performed on a 3 kW and a 5 kW model, and included measurements of the near field, the far field and the focussing quality. The radii of curvature of the mirrors were chosen to form a stable resonator. The gain coefficient and saturation intensity were determined using the Rigrod-analysis. In the recent literature, RF-excited CO2-lasers are considered to behave superior in terms of plasma properties. In this paper, we analyse and concentrate on the optical proper-ties of our DC-excited lasers. The beam quality was measured using a rotating wire type of beam analyser. Quality factors between 80 and 95% of the diffraction limit were measured at levels between two and four kilowatt. This means that the lasers are capable of emitting the lowest order transverse mode up to the highest industrially available power levels, using DC-excitation.

Paper Details

Date Published: 28 March 1989
PDF: 7 pages
Proc. SPIE 1024, Beam Diagnostics and Beam Handling Systems, (28 March 1989); doi: 10.1117/12.950166
Show Author Affiliations
Peter Muys, Euro Laser Technology (Belgium)
Jan Bastiaensens, Euro Laser Technology (Belgium)


Published in SPIE Proceedings Vol. 1024:
Beam Diagnostics and Beam Handling Systems
Alberto Sona, Editor(s)

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