High-sensitivity force sensing using a phonon laser in an active levitated optomechanical system

作者：Yutong He, Zijian Feng, Yuwei Jing, Wei Xiong, Xinlin Chen, Tengfang Kuang, Guangzong Xiao, Zhongqi Tan, Hui Luo · 发表于：Optics Express · 年份：2023 · DOI：10.1364/oe.502812 · 被引用次数：8 · 研究领域：Mechanical and Optical Resonators、Advanced MEMS and NEMS Technologies、Photonic and Optical Devices

Force detection with high sensitivity is of paramount importance in many fields of study, from gravitational wave detection to investigations of surface forces. Here, we propose and demonstrate a force-sensing method based on gain-enhanced nonlinearity in a nonlinear phonon laser. Experimental and simulation results show that the input force leads to the frequency shift of phonon laser, due to nonlinearity. In addition, we further investigate the influences of the pumping power, numerical aperture, and microsphere's refractive index on the performance of this force-sensing system, regarding the sensitivity and the linear response range. Our work paves a new way towards the realization of precise metrology based on the nonlinearity of phonon laser.