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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper TUM6

Study of an annular oytput stable resonator with large discharge volume in a high-power CO2 laser

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Abstract

A stable resonator with high-power annular output operating at the stable boundary was studied theoretically and experimentally. In a multi-kilowatt transverse flow CO2 laser with a large active volume,1 the construction of the resonator is shown in Fig. 1; 7-kW power output with very uniform near-field distribution and good beam quality was obtained. The divergence of the far field is 0.6 mrad (containing 80% of total laser energy). The photographs of the laser beam Plexiglas bum patterns for the near-field and far-field patterns are shown in Figs. 2(a) and (b), respectively.

© 1988 Optical Society of America

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