磁化等离子体光子晶体缺陷态的研究  

Defect mode properties of magnetized plasma photonic crystals

作　　者：章海锋[1,2] 马力[3] 刘少斌[4] 

机构地区：[1]南昌大学机电学院,南昌330031 [2]中国人民解放军炮兵学院南京分院,南京211132 [3]南昌大学理学院,南昌330031 [4]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《物理学报》2009年第2期1071-1076,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60771017)资助的课题~~

摘　　要：采用磁化等离子体的分段线性电流密度卷积时域有限差分(PLCDRC-FDTD)算法研究具有单一缺陷层的一维磁化等离子体光子晶体的缺陷模特性.从频域角度分析得到微分高斯脉冲的透射率,并讨论该光子晶体的缺陷层厚度、位置、周期常数和等离子体参数对其缺陷模的影响.结果表明,改变位置和周期常数不会影响缺陷模的频率,改变缺陷层的厚度可以增加缺陷模数,改变等离子体参数能同时影响缺陷模的频率和峰值.The piecewise linear current density recursive convolution （PLCDRC） finite-difference time-domain （FDTD） method for magnetized plasmas is applied to study the characteristic of one-dimensional magnetized plasma photonic crystals with a defect layer. In frequency domain, the transmission ratio of electromagnetic Gaussian pulses is computed, and the effects of periodic constant, parameters of plasma and parameters of defect layer such as dielectric length and position on defect mode properties of magnetized photonic crystals are analysed. The results show that the frequency of defect mode cannot be tuned by changing the parameters of position and periodic constant, changing the length of the defect layer can increase the number of defect mode, and the frequency and peak of defect mode can be changed by different parameters of plasma.

关 键 词：磁化等离子体光子晶体 光子晶体 缺陷模 时域有限差分法 

分 类 号：O77[理学—晶体学]