Design of a quasioptical gyrotron experiment with large mirror separation

T. A. Hargreaves, A. W. Fliflet, R. P. Fischer

Research output: Contribution to journalConference articlepeer-review


The design of a quasioptical gyrotron resonator with large mirror separation is presented. The large mirror separation reduces the peak ohmic heating density on the resonator mirrors to 400 W/cm2, well within the limits for cw operation. The longitudinal mode density in the resonator is also reduced to 0.2% by increasing the mirror separation, with approximately 20 modes within the interaction bandwidth of the resonator. This design will allow the rf radiation to propagate out of the vacuum system without any reflections, allowing relatively simple diagnosis and analysis of the output power. The large mirror separation also leaves room for a beam splitter to be inserted into the interior of the resonator to reflect a small amount of power out a side port for diagnosis. This will allow direct measurement of the resonator modes including any trapped harmonic modes.

Original languageEnglish (US)
Article number15762N
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1991
Externally publishedYes
Event16th International Conference on Infrared and Millimeter Waves 1991 - Lausanne, Switzerland
Duration: Aug 26 1991Aug 30 1991

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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