Resonators standing wave

Unlike the case of the Faraday rotation isolator, even an elementary description of the operational principle of the circulator is not easy, involving as it does the dimensional resonance of the microwave field within the ferrite cylinder. In this context the word resonance does not signify gyromagnetic resonance but a standing-wave resonance determined by the dimensions of the... 

Fig. 3. Composite-oscillator configuration for determining standing-wave (resonant) sound velocities. Usually a A/2 resonance is established. Displacement maxima occur at the ends and at the glue joints.

Fig. 1. Marx composite oscillator for determining standing-wave (resonant) sound velocities.

Fig.5.92a-c. Three possible standing-wave resonator configurations used for cw dye lasers (a) collinear pumping geometry (b) folded astigmatically compensated resonator of the Kogelnik type [5.143] with a Brewster prism for separation of pump beam and dye-lascr beam and (c) the pump beam is focused by an extra pump mirror into the dye jet and is tilted against the resonator axis... 

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