摘要
针对在理解负折射率材料中光波的传播特性时相位的特殊性质 ,详细分析推证了负折射率介质中折射率、波矢k的大小和方向、空间坐标系以及波相相位互之间的关系。分析结果表明负折射率介质层中的波矢k的反常取向是由于其标量值为负 ;在统一的坐标系下 ,由该标量值参与数值计算和分析 ,k则由标量值和单位矢量k0 (k0 >0 )共同决定 ,而不必再考虑左、右手系的区别。在此基础上依据电磁场理论推导了光波在负折射率介质层中的传输矩阵 ,用以分析含有负折射率介质层的复杂薄膜系统的光学性质。
For understanding the phase and transfer properties of optical wave propagating through negative refractive index medium (NIM) layer, the relations between negative refractive index, the value and direction of wave vector k, the coordinates and the phase have been investigated intensively. The results prove the peculiar direction of the wave vector k in a NIM layer results from its negative scalar magnitude. In the identical right hand coordinate system within NIM and PIM layers, only this negative scalar needs to substitute in the numerical simulation, while the vector k should be determined by both the negative scalar and the unit vector k 0(k 0>0). Based on this analysis, a transfer matrix of optical waves in NIM layer has been derived. The primary results show that the spectra characteristics of TE and TM modes from the films comprising NIM and PIM layers have changed prominently.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2004年第3期388-392,共5页
Acta Optica Sinica
关键词
负折射率介质
物理光学
正折射率介质
传输矩阵
复杂薄膜系统
光谱特性
色散关系
physical optics
electromagnetic field theory
negative refractive index medium (NIM)
positive refractive index medium (PIM)
transfer matrix
