Dissipative Acousto-optic Interactions in Optical Microcavities

Jia-Wei Meng, Shui-Jing Tang, Jialve Sun, Ke Shen, Changhui Li, Qihuang Gong, and Yun-Feng Xiao
Phys. Rev. Lett. 129, 073901 – Published 8 August 2022
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Abstract

We propose and demonstrate experimentally the strong dissipative acousto-optic interaction between a suspended vibrating microfiber and a whispering-gallery microcavity. On the one hand, the dissipative response driven by an external stimulus of acoustic waves is found to be stronger than the dispersive response by 2 orders of magnitude. On the other hand, dead points emerge with the zero dissipative response at certain parameters, promising the potentials in physical sensing such as precise measurements of magnetic field and temperature. The strong dissipative acousto-optic interaction is then explored for ultrasensitive detection of broadband acoustic waves. A noise equivalent pressure as low as 0.81 Pa at 140 kHz in air is demonstrated experimentally, insensitive to cavity Q factors and does not rely on mechanical resonances.

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  • Received 26 February 2022
  • Accepted 20 July 2022

DOI:https://doi.org/10.1103/PhysRevLett.129.073901

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Interdisciplinary Physics

Authors & Affiliations

Jia-Wei Meng1,2, Shui-Jing Tang1,*, Jialve Sun3,4, Ke Shen1, Changhui Li3,5, Qihuang Gong1,2, and Yun-Feng Xiao1,2,4,5,†

  • 1Frontiers Science Center for Nano-optoelectronics and State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 3College of Future Technology, Peking University, Beijing 100871, China
  • 4Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China
  • 5National Biomedical Imaging Center, Peking University, Beijing 100871, China

  • *sjtang@pku.edu.cn
  • yfxiao@pku.edu.cn

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Issue

Vol. 129, Iss. 7 — 12 August 2022

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