Related Experiment Video
Updated: May 26, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
Forced and self-excited oscillations of an optomechanical cavity
Stav Zaitsev1, Ashok K Pandey, Oleg Shtempluck
1Department of Electrical Engineering, Technion-Israel Institute of Technology, Haifa IL-32000, Israel. zzz@tx.technion.ac.il
Abstract:
We experimentally study forced and self-excited oscillations of an optomechanical cavity, which is formed between a fiber Bragg grating that serves as a static mirror and a freely suspended metallic mechanical resonator that serves as a moving mirror. In the domain of small amplitude mechanical oscillations, we find that the optomechanical coupling is manifested as changes in the effective resonance frequency, damping rate, and cubic nonlinearity of the mechanical resonator. Moreover, self-excited oscillations of the micromechanical mirror are observed above a certain optical power threshold. A comparison between the experimental results and a theoretical model that we have recently derived and analyzed yields a good agreement. The comparison also indicates that the dominant optomechanical coupling mechanism is the heating of the metallic mirror due to optical absorption.
Related Concept Videos
Forced Oscillations
Standing Waves in a Cavity
Damped Oscillations
Although friction and other non-conservative...
Oscillations In An LC Circuit
Sound Waves: Resonance
Simple Harmonic Motion

