The optomechanical cavity,which exploits the interaction between photons and phonons in a co-cavity system,offers unique advantages for detecting force perturbations.Based on this system,a remarkable sensing enhanceme...The optomechanical cavity,which exploits the interaction between photons and phonons in a co-cavity system,offers unique advantages for detecting force perturbations.Based on this system,a remarkable sensing enhancement has been observed in the field of mass,displacement,and acceleration.However,the realization of an optomechanical gyroscope remains unexplored.In this work,by integrating the two-dimensional silicon photonic crystal cavity with a single-mass micro-electro-mechanical-system(MEMS)gyroscope,we experimentally demonstrate a pioneering optomechanical gyroscope,featuring a remarkable compact size and tens of nanograms of a mechanical oscillator.The angular random walk performance 6.6 deg/h^(1//2)is observed and the noise equivalent angular velocity almost hits the device thermal noise bound around fundamental mechanical resonance frequency.Efficient photon-phonon interaction enables the system to achieve a 30×enhancement of the sensitivity,compared to the pre-oscillation case.These results represent a significant advancement towards high-performance miniaturized inertial navigation systems.展开更多
基金National Natural Science Foundation of China(62371106,U2230206,U2441217,62204264)National Key Research and Development Program of China(2022YFA1405900)+1 种基金Sichuan Provincial Science and Technology Planning Program(2023YFG0040,2024ZYD0156)Innovation Ability Construction Project for Sichuan Provincial Engineering Research Center of Communication Technology for Intelligent Io T(2303-510109-04-03-318020)。
文摘The optomechanical cavity,which exploits the interaction between photons and phonons in a co-cavity system,offers unique advantages for detecting force perturbations.Based on this system,a remarkable sensing enhancement has been observed in the field of mass,displacement,and acceleration.However,the realization of an optomechanical gyroscope remains unexplored.In this work,by integrating the two-dimensional silicon photonic crystal cavity with a single-mass micro-electro-mechanical-system(MEMS)gyroscope,we experimentally demonstrate a pioneering optomechanical gyroscope,featuring a remarkable compact size and tens of nanograms of a mechanical oscillator.The angular random walk performance 6.6 deg/h^(1//2)is observed and the noise equivalent angular velocity almost hits the device thermal noise bound around fundamental mechanical resonance frequency.Efficient photon-phonon interaction enables the system to achieve a 30×enhancement of the sensitivity,compared to the pre-oscillation case.These results represent a significant advancement towards high-performance miniaturized inertial navigation systems.
