非常感谢老师的回答，设置光源波长400nm-700nm后，测试了您给的建议，测试结果是斜入射不离焦以及正入射光斑不是只有一半，但是PML边界修改为steep angle后光斑还是只有一一半。测试结果如下所示。
正入射离焦情况如下：
斜入射不离焦情况如下：
pml修改为steep angle结果如下：
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