Nonlinear Behavior Research In The Hybrid Spinning Optomechanical System

An optomechanical system describes the interaction between the light field in the cavity and the mechanical oscillator through the radiation pressure in the cavity,which is a rapidly developed field in quantum optics in the past ten years,and has potential applications and major breakthroughs in high-precision measurement,quantum information processing and ground state cooling of nanomechanical oscillators.In recent years,many interesting optical nonlinear phenomena have been discovered,such as optical bistability,optomechanically induced transparency,electromagnetically induced transparency,second-order sideband,higher-order sidebands,slow and fast light,and four-wave mixing.At present,rotating optical cavity has gradually become a hot spot in the research of optomechanical system.A non-reciprocal optical transmission with an isolation of 99.6% was achieved using a rotating optical cavity in a recent experiment.In a rotating device,an additional phase is accumulated for the propagating light,called the optical Sagnac effect.This effect has led to the discovery of many important nonlinear optical phenomena in hybrid spinning optomechanical systems and has been applied accordingly in quantum information.In first chapter,we introduce the development process of cavity optomechanical systems in recent years and several typical optomechanical systems,on the basis we introduce the research progress of rotating optical cavity.In second chapter,we investigate the optomechanically induced transparency in composite rotating optomechanical systems.We introduce the plasma-induced transparency phenomena in plasma systems,brillouin scattering-induced transparency phenomena and optomechanical induced transparency phenomena in the optomechanical system of silicon microsphere cavity,which provide theoretical basis for optomechanically induced transparency in rotating cavity optomechanical system.In third chapter,we study the optomechanical induced transparency in the rotating cavity optomechanical system,which is a rotatable ring cavity coupled with a fixed conical fiber,and the strongly pumped light and weak detection light always enter from the left side of the fiber and enter the ring cavity through waveguide coupling.The rotation of the ring cavity induces the Sagnac effect and produces additional light frequency shift,and it is found that the transparent window in the transmission spectrum of the ring cavity will shift in different directions in different rotation modes,and the rotation rate increases and the intensity of the transparency phenomenon is enhanced by light force.On this basis,we change the size of the pump optical power and the cavity-pump detuning amount to realize the control of the position of the strong absorption sideband.Thus,by controlling the rotation of the optical cavity,effective control of coherent light propagation can be achieved.In fourth chapter,we investigate nonlinear effects including optical bistability and the four-wave mixing in a composite rotating optomechanical system.Based on the theoretical derivation of the previous chapter,we study the optical bistability state,in which the Sagnac frequency shift generated by rotation induction can be effectively controlled by manipulating the rotation rate and direction of the optical cavity,and then the optical bistable behavior can be effectively manipulated.We investigated the influence of the rotation direction and rotation rate of the annular cavity on the four-wave mixing.The results show that when the ring cavity is spinning,the energy of the mode splitting at the resonance is used to increase the peak of the spike in the four-wave mixing intensity spectrum;When the annular cavity rotates in reverse,the system consumes a four-wave mix intensity to enhance the pattern splitting behavior.We also investigated the effect of additional phonon pumping on four-wave mixing.The results show that the external force will destroy the symmetry of the four-wave mixing intensity spectrum of the system,and the enhancement of the external force will significantly increase the four-wave mixing intensity at the same rotation rate.Under the same external force,the increase in rotation rate reduces the four-wave mixing intensity of the system.In fifth chapter,we summarize the results of this paper in detail and look forward to subsequent research work.Figure [19] Reference [118]...