铝质紫外闪耀光栅衍射效率的模拟计算及其与实验结果的对比

摘要

In order to determine every order′s or total diffractive efficiencies of real conductor UV blazed gratings under different mounting conditions, supported by the Reciprocity Theorem and the Equivalent Field Principle, one Multiple Kirchhoff Integral Method for solving the efficiencies of metal blazed gratings is developed in our laboratory.Using this method, the efficiency curves of different parameter UV aluminum blazed gratings under different mounting conditions are calculated and compared with the experimental result. The comparison show that the polarization of the incident beam has a great impact on the diffractive efficiencies of gratings. Key words：%为了考查实际导体紫外闪耀光栅在不同安装条件下各级次及总的衍射效率随入射波长变化情况，在互易定理及等效场原理支持下，利用我们提出的数值求解金属闪耀光栅的多次Kirchhoff积分方法，分别计算了不同参数的铝质紫外闪耀光栅在不同安装条件下的衍射效率曲线，并与本课题组早期完成的有关实验结果进行了对比，表明入射光的偏振特性对闪耀光栅衍射效率的影响是很大的。