Electromagnetic Theory of Open Resonator : Fabry-Perot Resonator

概要

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The electromagnetic fields in open resonator such as Fabry-Perot resonator are investigated by the method of the integral equation with Green's tensor and the asymptotic perturbation method for large wave numbers. The general vector theory of the electromagnetic field in the open region between two separately situated conductor surfaces is developed in a suitable form for the analysis of the scattering and excitation phenomena. The input admittance of the open resonator coupled to the waveguide is derived and shown to be different from that of a closed cavity. This difference is attributed to the different from that of a closed cavity. This difference is attributed to the radiation loss in the open resonator. This general vector theory is applied to the analysis of the open resonator consisting of two parallel circular disks. The resonant frequencies and the diffraction losses of the resonant fields are derived and compared with those obtained by approximate scalar field theory in case of circularly polarized modes.
社団法人日本物理学会の論文
1972-03-05