Effective mass sensing using optomechanically induced transparency in microresonator system

TL;DR

This paper proposes a novel mass sensing method using optomechanically induced transparency in microresonators, enabling femtogram-level detection without requiring high Q-factors or strong coupling.

Contribution

It introduces a mass sensing scheme based on optomechanically induced transparency and a Stokes field reference, avoiding spectral width limits of traditional resonance shift detection.

Findings

Achieved femtogram-level mass sensing accuracy.

Does not require high cavity Q-value or strong optomechanical coupling.

Theoretically demonstrated the system's dynamical behavior and sensitivity.

Abstract

Detecting and weighing the individual nanoparticles is an important approach to study the behavior and properties of single particles. Here we illustrate an effective mass sensing scheme using optomechanical resonator system. Based on the optomechanically induced transparency phenomenon, a Stokes field reference approach is used to sense the mass of the particle on the microresonator. The field intensity of the transmission field will be changed by the effect of the particle which avoids the limits of decay induced spectral width in the resonance shift detection. Exploiting the perturbation method, we theoretically evaluated the dynamical behavior of the system, and achieved the femtogram level mass sensing without the need for high cavity Q-value, and strong coupling strength in the optomechanically system.