Optical response of two coupled optomechanical systems in the presence of nonlinear mediums

摘要

AbstractIn this paper, we investigate response of a hybrid optomechanical system in different situations. This system is composed of two coupled optomechanical cavities, which one of them is filled with an optical parametric amplifier (OPA) and the other one encompasses a nonlinear Kerr medium. The Hamiltonian of the system is written in a rotating frame. The dynamics of the system is obtained by the quantum Langevin equations of motion in a steady state regime. The results show that the presence of OPA and the Kerr medium in the system can considerably change the behavior of both cavities. For this reason, we show that by choosing different values for the optical parameters of the system, one can switches the behaviors of the cavities between mono-, bi- and tristability. Also, we show that by changing the detunings of the cavities, one can obtain uncommon responses from the system. Furthermore, we show that it is possible to create proper optical multistability regions for both cavities.Highlights•A hybrid optomechanical system consisting of two coupled optomechanical cavities is proposed.•A nonlinear Kerr medium and an optical parametric amplifier affect the stability of the system.•Switching the behaviors of both cavities from bistability to tristability by changing the gain coefficient of OPA.•Switching the behaviors of both cavities from tristability to monostability by increasing the Kerr coefficient.•Appearing multistability and unconventional responses from the cavities by changing the detunings of them.