摘要
用严格的模式理论研究了位相光栅中的电磁场分布和各衍射级次的衍射效率．用分段解析函数来表达本征函数，而不采用无穷级数的方法．利用稳定、快速和精度高的递推公式来计算反射透射阵和振幅系数阵，从而能处理任意多台阶的位相光栅．数值计算结果表明，存在全反射．也讨论了全反射的条件和物理机制．
Abstract This paper discusses the electromagnetic field distribution in phase grating and the rate of diffraction for different diffraction orders by using a rigorous modal theory. Piece wise analytical function is used to express the eigen functions instead of the infinite series in other methods. Stable, fast and accurate recurrent formulae are developed to calculate the reflection transmission and amplitude coefficient matrix that can treat phase grating with any number of groove steps. The numerical results show that there exist bands of total reflectance. The conditions and the physical mechanisms for which the total reflectance occurs are discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第8期1278-1288,共11页
Acta Physica Sinica
基金
国家教育委员会回国人员基金
中国科学院光电技术研究所微细加工光学技术国家重点实验室资助
