Coherent Phonon Manipulation in a Disk Resonator Gyroscope with Internal Resonance

The internal resonance and the Stokes pump are both typical representatives of the phonon manipulation in resonators, achieving modes’ dynamic coupling and energy transfer. The internal resonance can effectively improve resonators’ frequency stability, while the Stokes pump utilizes modal coupling to realize the amplification of the low-order mode’s sensitivity, making them become research hotspots recently. However, conventional phonon cavity manipulation studies focus on typical linear or nonlinear modes’ coupling. There are few reports on the Stokes pump experiment using a nonlinear mode where internal resonance occurs as the cavity mode. Compared with previously reported mode coupling experiments, this paper illustrates a novel coherent phonon manipulation method to combine advantages of the internal resonance and the Stokes pump. This paper reports the observation of coherent phonon manipulation in a disk gyroscope with internal resonance. We demonstrate that, by applying pump excitation on a resonator’s internal resonance mode which acts as a cavity mode, resulting in the occurrence of a self-sustaining oscillation on its low-order manipulated mode, it is possible to improve the gyroscope’s mechanical band width more than 2 times.