DISC RESONATORS FOR ANGULAR VELOCITY SENSORS
Annotation
Disc and ring resonators are used as sensitive elements in angular velocity sensors. The sensitivity, or minimum detectable angular velocity is determined by the quality factor of the resonator. An approach is proposed for implementation of new types of gyroscopes based on disk mini-resonators with whispering gallery modes is proposed, and characteristics of two samples of passive disk resonators with a diameter of 5 mm, made of CaF2 and MgF2, are determined theoretically and experimentally by analyzing the resonance curve. The quality factor obtained from experimental data comprises about 5·108 and coincides with the theoretical result. The derived estimate for minimum detectable angular velocity Ωmin = =0.3°/h allows to use such gyroscopes with whispering gallery resonators in a wide range of different devices, e.g., robotics, drones, etc.
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