Synchronization in an Optomechanical Cavity

TL;DR

This paper investigates synchronization phenomena in an optomechanical cavity with self-excited oscillations, combining experimental measurements and theoretical analysis to understand phase locking and phase diffusion.

Contribution

It provides a combined experimental and theoretical study of synchronization in an optomechanical cavity, including phase space analysis and phase locking mechanisms.

Findings

Synchronization occurs within a specific detuning region.

Theoretical predictions match experimental phase space distributions.

Time-resolved tomography reveals phase diffusion and locking behaviors.

Abstract

We study self-excited oscillations (SEO) in an on-fiber optomechanical cavity. Synchronization is observed when the optical power that is injected into the cavity is periodically modulated. A theoretical analysis based on the Fokker-Planck equation evaluates the expected phase space distribution (PSD) of the self-oscillating mechanical resonator. A tomography technique is employed for extracting PSD from the measured reflected optical power. Time-resolved state tomography measurements are performed to study phase diffusion and phase locking of the SEO. The detuning region inside which synchronization occurs is experimentally determined and the results are compared with the theoretical prediction.