Higher-Order Sideband Based On Transparent Windows In A Two-Cavity Optomechanical System

Cavity photomechanics has developed rapidly in the last decade.As a hot field recently,it mainly studies the optical microcavity and the coupling between microcavity and micro-nanomechanical vibrators through the interaction of radiation pressure,so as to observe the quantum behavior of cavity photomechanics system.The interaction between the microcavity and the mechanical oscillator changes the optical response characteristics of the opto-mechanical system leading to regular mode splitting and electromagnetic induced transparency.In the electromagnetic induced transparency phenomenon,the opaque medium can become transparent under the action of strong pumping light,accompanied by the drastic change of refractive index,which causes the group velocity of detected light to decrease sharply,so it can be used for slow light or even stop light effect.So far,the single-cavity optical force system has been extended to the two-cavity optical force system,that is,the two-cavity optical force system coupled by two optical modes and one mechanical mode.The two-cavity optical force system has aroused extensive research interest and carried out a series of research work.Dual-cavity systems have potential applications and can be implemented in a range of important devices,such as phonon lasers,optical wavelength converters,enhanced nonlinearity,and photon-phonon energy transfer.The resonance function in the resonator complex system can be controlled,which is the main component of the system.By changing the coupling strength between the resonators the space between the optical resonators can be continuously manipulated.In addition,the quantum nonlinear effects in two-cavity photomechanical systems are theoretically enhanced and can be used for photomechanical quantum information processing of photons and phonons.It is also noted that the two-cavity optical force system can be used for quantum storage and retrieval of photons and conversion between optical fields.We propose a scheme to adjust single and double transparent Windows in a double cavity optical mechanism.By studying the output field of the two-cavity resonator,we not only show the transmission spectrum of the probe field and the generation of second-order sideband,but also analyze the physical mechanism of inducing the transparent window and the efficiency of second-order sideband generation.In addition,the optically mechanically induced transparent window and the transparent window caused by the coupling of two cavities are discussed.We find that the generation of transparent Windows and second-order sideband can be modulated by controlling the power of the field and the coupling strength between the two cavities.Our device is feasible for controlling optical transmission,which may have potential applications in quantum optical devices and quantum information networks.