Catastrophic transition between dynamical patterns in a phonon laser

The bifurcations or transitions of the classical nonlinear systems with finite degrees freedom exhibit some dynamical behaviors that are similar to those in phase many-body systems. A type them form a sudden transition amplitudes between two harmonic oscillations, which stable under periodically driving force, is not so common see. We show this can be realized system coupling microresonator supports mechanical vibration another microresonator, and was experimentally demonstrated as phonon laser. If pump laser power intercavity strength adjusted critical value, cavity field patterns will suddenly change, together jump stabilized amplitude. Such applied precise measurement optomechanical constant, hard measure due its proportion tiny zero-point fluctuation amplitude.Received 5 January 2021Accepted 12 July 2021DOI:https://doi.org/10.1103/PhysRevResearch.3.L032018Published by American Physical Society terms Creative Commons Attribution 4.0 International license. Further distribution work must maintain attribution author(s) published article's title, journal citation, DOI.Published SocietyPhysics Subject Headings (PhySH)Research AreasBifurcationsCoupled oscillatorsNonlinear opticsOptomechanicsNonlinear DynamicsAtomic, Molecular & Optical