耦合波法和模式匹配法分析亚波长光栅中的光场分布

对于亚波长微结构光学元件,其特征尺寸为波长量级或亚波长量级,刻蚀深度也较大,标量衍射理论中的假设和近似己不再成立.此时,光的偏振性质和不同偏振光之间的相互作用对光的衍射结果起着重大作用,因此,必须应用严格的矢量衍射方法来分析和进行设计.在光栅问题的精确数值汁算方法中,目前常用的两种方法为耦合波法和模式匹配法.我们应用耦...

Analysis of the electromagnetic field in the subwavelength gratingusing methods of coupling-wave and pattern-matching respectively

For the subwavelength microstructure optical components,the characteristic dimension is wavelength or subwavelength magnitude,the depth of etching is large too,the hypothesis and approximate of scalar diffraction theory is no longer correct.In this situation,the light polarization and the interaction between different polarized light plays an important role,therefore,we must analysis and design the optical components with strict vector diffraction method. Presently,there are two methods for precise calculat...