Asghari Nejad A, Askari H R, Baghshahi H R
Appl Opt. 2017 Apr 1;56(10):2816-2820. doi: 10.1364/AO.56.002816.
We theoretically investigate optical bistability for a hybrid optomechanical system, where two cavities (an optomechanical cavity and a traditional one) are coupled together. A Kerr medium is inserted in the optomechanical cavity and there is an ultra-cold atomic gas inside the other. Dynamics of the system is described by Heisenberg-Langevin equations of motion in the steady-state regime. Bistability is observed in intracavity intensity for the optomechanical cavity, and the response of this phenomenon to optical parameters of the system is investigated. It is observed that the atomic medium has a deep effect on bistable behavior of intracavity intensity for the optomechanical cavity. Also, we determine a critical value for the Kerr coefficient of the Kerr medium to observe bistability in intracavity intensity for the optomechanical cavity.
我们从理论上研究了一种混合光机械系统中的光学双稳性，其中两个腔（一个光机械腔和一个传统腔）耦合在一起。在光机械腔中插入了一个克尔介质，另一个腔内有超冷原子气体。该系统的动力学由稳态下的海森堡 - 朗之万运动方程描述。在光机械腔的腔内强度中观察到了双稳性，并研究了这种现象对系统光学参数的响应。结果表明，原子介质对光机械腔的腔内强度的双稳行为有深刻影响。此外，我们确定了克尔介质的克尔系数的一个临界值，以观察光机械腔的腔内强度中的双稳性。
