摘要
拉盖尔高斯旋转腔系统是获得光力学诱导透明(OMIT)效应的一种特殊装置,进一步提出在该腔中利用非线性耦合和轨道角动量(OAM)交换实现三阶克尔非线性效应的调控。利用系统的哈密顿模型可以得到克尔非线性解析表达式,经过数值模拟研究发现,当系统被调节到OMIT窗口附近时,携带OAM的光场会经历极小的吸收和强烈的色散,从而导致巨克尔非线性效应的产生。与传统的电磁诱导透明(EIT)和OMIT相比,该系统可以通过OAM和其他参数实现巨克尔非线性的调控。不仅如此,轨道角量子数还可以被用于控制光传播的群速度、实现快光和慢光效应。
The LaguerreGaussian rotating cavity system is a special device for obtaining optomechanically induced transparency(OMIT).This paper further proposes performing nonlinear coupling and orbital angular momentum(OAM)exchange in this cavity to achieve the modulation for the thirdorder Kerr nonlinear effect.The analytical expressions of Kerr nonlinearities are obtained with the Hamiltonian model of the system.Numerical simulation reveals that when the system is modulated to be in the vicinity of the OMIT windows,the OAMcarrying optical field undergoes slight absorption and intense dispersion,which leads to the generation of giant Kerr nonlinear effects.In contrast to the conventional electromagnetically induced transparency(EIT)and OMIT,the proposed system can be modulated by OAM and other parameters to achieve giant Kerr nonlinearities.In addition,the orbital angular quantum number can also be used to control the group velocity of light propagation and achieve fast-and slowlight effects.
作者
黄先明
王飞
陆宝乐
白晋涛
Huang Xianming;Wang Fei;Lu Baole;Bai Jintao(State Key Laboratory of PhotonTechnology in Western China Energy,Xi′an 710127,Shaanxi,China;Shaanxi Engineering Technology Research Center for Solid State Lasers and Application,Xi′an 710127,Shaanxi,China;Provincial Key Laboratory of PhotoElectronic Technology,Institute of Photonics&PhotonTechnology,Northwest University,Xi′an 710127,Shaanxi,China;School of Science,Hubei University of Technology,Wuhan 430068,Hubei,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2022年第22期127-134,共8页
Acta Optica Sinica
基金
国家重大科研仪器研制项目(51927804)
国家自然科学基金青年项目(61905193)。
关键词
非线性光学
克尔系数
轨道角动量
快慢光效应
光力学诱导透明
nonlinear optics
Kerr coefficient
orbital angular momentum
fast-and slowlight effects
optomechanically induced transparency
