A new scalable annular CO2 laser with high specific output power

J. W. Bethel, H. J. Baker, D. R. Hall

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A compact, annular waveguide CO2 laser is presented which uses a novel method of RF excitation to allow discharge length scaling and a non-interrupted optical path within the annular resonator. The laser has produced an output power of 465 W at 12.9% efficiency with an annular spacing of 1.5 mm. The electrode transmission line effects in annular lasers are analysed, and it is shown that the new excitation format produces a highly uniform discharge, resulting in a high specific output power of 16.8 kW m-2. © 1998 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)352-358
Number of pages7
JournalOptics Communications
Issue number1-6
Publication statusPublished - 1 Jan 1998


  • Annular
  • Carbon dioxide
  • Laser
  • Waveguide


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