轴上光强为零的位相型波带片

A NOVEL ZONE PLATE FOR OPTICAL ALIGNMENT

提出了一种新型的衍射光学元件（ＤＯＥ）一—位相型零轴辐射波带片．用计算机模拟和实验分析验证了该元件的衍射特性．这种元件能实现光轴上任意点光强为零，可应用于高精度光学准直．

A new kind of diffractive optical element is presented,computer simulation and theoretical analysis for its diffractive characteristics are given,zero irradiance alongoptical axis can be implemented by this element and it can be applied to optical alignment.