Code for adjoint optimization of 2D beam splitter

Dear Dr Kim,

This is Xianshun Ming from Xi'an Institute of Optics and Precision Mechanics, CAS, China. Sorry for trying to contact you in such a funny way because I have no other access, but I do have some trouble with programming for adjoint optimization of 2D beam splitter, which you are quite expert at.

I have trying to coding the adjoint optimization method for a 2D beam splitter, just as what you did in your dissertation and the paper "Inverse design and demonstration of high-performance wide-angle diffractive optical elements", and I have tried hard to modify the original code from Professor Jonathan Fan ([Metagrating-Topology-Optimization]) which is currently just for 1D beam deflection, but unfortunately, I failed to obtain the even diffraction order distribution I hope, especially for cross polarization components. By the way, I tried to use the C4v symmetry to reduce the computation cost.

I am wondering that if you could be so kind to share your source code to optimize the 2D beam splitter with RCWA method based on the adjoint optimization algorithm, and I would appreciate it very much.

Best regards and hope to hear from you soon.

Xianshun

dongcheonkim / tutorial

Code for adjoint optimization of 2D beam splitter #2