摘要
给出手征媒质中电磁势满足的时谐波动方程，运用并矢代数方法求解了电磁势的并矢格林函数，以偶极振子为例研究了手征媒质中的远区辐射场性质。结果表明：手征媒质中存在电磁模式分裂，其本征模为左、右旋圆极化波，偶极辐射性质与旋波因子密切相关。
Time--harmonic wave equations of electromagnetic potential in chiral media are given,the dyadic Green' s function is solved by using dyadic algebraic method, then. by taking dipole element for example,the characteristics of far--zone radiation field are studied. The results indicate thatelectromagnetic mode division existS in chiral media .the eigenmedes are left--hand or right--hand circular polarised wave,the dipole radiation is closely related to the chirality parameter.
基金
江苏省教委自然科学基金
关键词
手征媒质
达朗伯方程
并矢格林函数
电磁势
chiral media
d' Alembert equation
dyadic Gree's function
dipole radiation
