-
-
November 30, 2022 at 1:33 am
xingguohua18
Subscriber老师您好,我想设计一个实现斜入射光束聚焦的超透镜,单个结构的周期为450nm,入射光波长为532nm,但因为斜入射单个结构存在零级和一级衍射光。请问在根据超透镜的目标相位去排列超构原子分布时,应该考虑的是FDTD计算的电场相位(所有衍射级次的电场叠加值)还是RCWA计算的单个衍射级次(0级)的相位? -
November 30, 2022 at 7:27 pm
Guilin Sun
Ansys Employee不管是用FDTD还是RCWA,都应该提取单个衍射级的相位,否则结果不正确,因为实际有用的透射是指定的衍射级来实现聚焦,当然高级衍射也可以实现聚焦,只是衍射角不同,衍射效率不同。
有高级衍射的超透镜一般问题比较多,比如有旁瓣杂散光,所需要的透射率有点低等缺点。
-
December 2, 2022 at 2:37 am
xingguohua18
Subscriber好的,谢谢老师,还想请教下老师,对于存在高级次衍射的情况,FDTD应该如何提取单个衍射级次的相位和振幅?
-
December 2, 2022 at 11:11 pm
Guilin Sun
Ansys Employee单元仿真的分析组里可以指定想要的衍射级。超透镜就只能仿真整个透镜,计算焦面透射率时可以用窗口函数仅计算主光斑。
-
- You must be logged in to reply to this topic.

Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Ansys Insight: FDTD 和 varFDTD 常见的发散原因以及处理
- Ansys Insight: 透射率反射率电场大于1,或者透射率反射率之和大于1的原因与解决方案–综合贴
- Ansys Insight: FDTD Solutions 的光源类型及其典型应用:初学者
- Ansys Insight: 关于FDTD 并行计算的有关问题
- 软件打不开
- Ansys Insight: 光学强度、功率、电场强度平方的关系以及电磁能量
- Ansys Insight: 如何知道FDTD的仿真时间足够长
- 超透镜聚焦效率计算
- Ansys Insight: 如何将结果数据如何保存成txt格式
- Ansys Insight: 关于mode expansion监视器的使用和结果分析
-
8808
-
4658
-
3155
-
1688
-
1480
© 2023 Copyright ANSYS, Inc. All rights reserved.