On the spectrum of radiation pressure driven optomechanical oscillator and its application in sensing

We study the RF spectrum of radiation pressure driven optomechanical oscillators (OMO). Using experiments and theoretical estimations we have characterized the relative amplitude of OMO’s spectral components as a function of optical detuning and optical input power. We have identified a regime where the optical resonance shift can be directly extracted from the RF spectrum for resonant optical sensing applications.