This is an electromagnetic solver based on Rigorous Coupled Wave Analyses (RCWA) for layered structures with incommensurate periodicities. It can be used to obtain the scattering properties (e.g. transmission, reflection, diffractions) in such structures.

The theory and preliminary results of this method are described in this paper.

The results obtained from this method has matched well to experiments in microwave domain and optical domain.

This package has also been used for applications such as tunable filter.

If you find this package helpful for your research, please consider citing:

@article{PhysRevLett.126.136101, title = {Theory for Twisted Bilayer Photonic Crystal Slabs}, author = {Lou, Beicheng and Zhao, Nathan and Minkov, Momchil and Guo, Cheng and Orenstein, Meir and Fan, Shanhui}, journal = {Phys. Rev. Lett.}, volume = {126}, issue = {13}, pages = {136101}, numpages = {6}, year = {2021}, month = {Mar}, publisher = {American Physical Society}, doi = {10.1103/PhysRevLett.126.136101}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.126.136101} }

For collaborations and inquiries, please contact [email protected].