Ohmic effects in quasioptical resonators

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

Research output: Contribution to journalArticlepeer-review


Several properties of the Fabry-Perot-type open resonator used in the quasioptical gyrotron (QOG) and the quasioptical induced resonance electron cyclotron (IREC) maser are derived. The electric fields of the normal modes are given for the general case of the resonator axis tilted with respect to the direction perpendicular to the electron beam axis. The ohmic quality factor and the power dissipated in the mirrors are derived, as is the energy stored in the resonator. The time dependence of the mirror heating, relevant for pulsed experiments, is also derived. The formulae are applied to an example of current relevance, the quasioptical IREC maser resonator.

Original languageEnglish (US)
Pages (from-to)9-21
Number of pages13
JournalInternational Journal of Infrared and Millimeter Waves
Issue number1
StatePublished - Jan 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering

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