6533b860fe1ef96bd12c38d0
RESEARCH PRODUCT
Optomechanical systems close to the conservative limit
S. G. Nana EngoD. Platou FoullaS. Takougang KingniP. Djorwésubject
PhysicsPhononPhysics::Optics01 natural sciencesParametric instability010309 opticsResonatorNonlinear systemQuantum mechanics0103 physical sciencesLimit (music)Dissipative system010306 general physicsLasing thresholdMultistabilitydescription
In dissipative optomechanical systems, the total damping hits negative values at the parametric instability point. This also corresponds to the phonon lasing threshold, where the mechanical resonator enters in the self-induced oscillations regime. This paper shows that the two mentioned phenomena are delayed from each other when the optomechanical systems operate close to their conservative limit, where the mechanical damping is very small. In fact, the total damping can be negative and very small for a while before the phonon lasing happens. As a result, the linearized theory is extended over the negative damping region where the mechanical displacements remain very small. It follows that nonlinear behavior as the dynamical multistability is retarded in such systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-23 | Physical Review A |