Thank you for contacting Lumerical support. Before proceeding, please note that this is a public forum and anything you post will be visible to the general public. For users residing in the United States, please ensure that the files and information contained within your posts are not International Traffic in Arms Regulations (ITAR) or export controlled.
To help us solve your issue as quickly as possible, please provide the following information:
1. What device are you trying to simulate? Include diagrams if available.
I want to calculate the phase of the reflected light from the metasurface. The configuration of my device is shown in Figure below. The idea is to extract the phase change induced by the metasurface when we change the height of the silicon grating from silicon mirror as shown in attached Figure below. I am refering to Figure 2A and B of the attached paper.
2019_Science_Temporal color mixing and dynamic beam shaping with silicon metasurface.pdf (1.2 MB) 2019_Science_Temporal color mixing and dynamic beam shaping with silicon metasurface_supplementary.pdf (606.2 KB)
2. What results are you trying to obtain? Be as specific as possible.
More specific I want to reproduce the Fig S2 of the supplementary material (attached below).
Somehow I can reproduce the reflection spectra as see attached image (Fig S1 of supplementary) but I can also to some extend being able to reproduce Fig S2a i.e. phase contour plot for width 90 nm. But for width 140 nm something weird happening to my plot.
Pls note: I need the phase induced by metasurface only, thus I substracted the propagation phase and for that I wrote script attached here.
3. Description of the problem or issue.
I can reproduce the phase contour plot for silicon slab width 90 nm but for width 140 nm the contour plot does not match. See attached
4. Lumerical product and software version.