Xiao Yunfeng and Gong Qihuang of Nano-Optoelectronics Frontier Science Center have made important progress in the research of ultra-sensitive acoustic wave sensing

The photoacoustic interaction in the microcavity system is the physical basis of many frontier and applied sciences, and is of great significance in the fields of quantum optomechanics, precision measurement, information communication, and photoacoustic imaging

In response to the above challenges, the research group of Professor Xiao Yunfeng and Academician Gong Qihuang of the Institute of Modern Optics, School of Physics, Peking University, Center for Frontier Science of Nano-Optoelectronics, State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, and Academician Gong Qihuang, have developed an optical microcavity-cantilever microfiber coupling system.

Further analysis found that the microcavity photoacoustic coupling system has a zero-response "silence" phenomenon, which shows the natural anti-interference ability to external sound sources, and is of great significance in the field of precise measurement of physical quantities such as magnetic field and temperature

Fig.

On August 8, 2022, the research results were published online in Physical Review Letters under the title "Dissipative acousto-optic interactions in optical microcavities".

The above research work is supported by the National Key R&D Program, the National Natural Science Foundation of China, the China Postdoctoral Science Foundation, the High Performance Computing Platform of Peking University, and the Collaborative Innovation Center for Extreme Optics of Shanxi University