二维空变等离子体光子晶体带隙特性研究  

Band Gap Characters of 2D Space-Varying Plasma Photonic Crystal

作　　者：郑召文[1] 杨利霞[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《北京理工大学学报》2014年第12期1289-1293,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(61072002);江苏省六大人才高峰计划项目;江苏省博士后基金资助项目(1201001A);江苏大学高级专业人才科研启动基金资助项目(11JDG054)

摘　　要：采用磁化等离子体时域有限差分(FDTD)算法,研究了二维空变磁化和非磁化等离子体光子晶体(PPC)的禁带特性.建立了二维空变等离子光子晶体的模型,以微分高斯脉冲为激励源,引入UPML吸收边界,计算分析了二维垂直入射的等离子体频率随空间呈脉冲形式变化的周期函数对禁带的影响.结果表明在空间上通过改变等离子频率的变化速率可以实现对等离子体光子晶体禁带宽度的控制.By using the finite different time domain（FDTD）method for the electromagnetic scattering of magnetized plasma,the band gap properties of two dimensional space-varying magnetized and unmagnified plasma photonic crystals（PPC）were studied. Model of twodimensional plasma phonic crystals was built. With the differential Gaussian pulse as the incidence source,the reflection coefficients of the PPC were computed with the normal incidence condition,and its plasma as the variation of the periodic Gauss pulse function.The characteristics for the forbidden band gap of PPC were analyzed under different space pulse width.The results show that the band gap can be controlled by changing the plasma frequency in different space changes.

关 键 词：时域有限差分方法 光子晶体 等离子体 光子带隙 

分 类 号：O441[理学—电磁学]