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Related Experiment Video

Updated: Aug 30, 2025

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Dissipative Acousto-optic Interactions in Optical Microcavities.

Jia-Wei Meng^1,2, Shui-Jing Tang¹, Jialve Sun^3,4

¹Frontiers Science Center for Nano-optoelectronics and State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China.

Physical Review Letters

|August 26, 2022

Summary

This summary is machine-generated.

We demonstrate strong acousto-optic interactions using a microfiber and microcavity. This enables ultrasensitive acoustic wave detection with potential applications in precise physical sensing.

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Last Updated: Aug 30, 2025

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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

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Published on: April 4, 2016

Area of Science:

Optics
Acoustics
Materials Science

Background:

Whispering-gallery microcavities are sensitive optical resonators.
Acousto-optic effects couple acoustic waves to optical properties.

Purpose of the Study:

To investigate strong dissipative acousto-optic interaction between a microfiber and a microcavity.
To explore applications in ultrasensitive acoustic wave detection and physical sensing.

Main Methods:

Experimental setup involving a suspended vibrating microfiber and a whispering-gallery microcavity.
Characterization of dissipative and dispersive responses to acoustic waves.
Demonstration of acoustic wave detection with low noise equivalent pressure.

Main Results:

Dissipative response is 2 orders of magnitude stronger than the dispersive response.
Emergence of 'dead points' with zero dissipative response at specific parameters.
Ultrasensitive detection of broadband acoustic waves with a noise equivalent pressure of 0.81 Pa at 140 kHz.
Detection method is insensitive to cavity Q factors and does not rely on mechanical resonances.

Conclusions:

The proposed strong dissipative acousto-optic interaction offers a novel approach for ultrasensitive acoustic sensing.
The observed 'dead points' suggest potential for precise physical sensing, including magnetic field and temperature measurements.
This technique provides a robust platform for acoustic detection without mechanical resonance limitations.