Is there anyway to add Nonlinear crystal or Metal in WarpX simulation?

[zhazhajust]

I noticed that there exist "macroscopic" medium in warpx, so I wonder is it possible to add some metal such as Au, Cu or Nonlinear crystal such as LN in WarpX simulation？

[ax3l]

Hi @zhazhajust,

We currently only have an implementation for isotropic, linear macroscopic media. One could extend this (we don't have a project on it, but contributions welcome).

[RemiLehe]

Regarding metals, WarpX has two ways to model them:

• As a perfectly conducting boundary: in that case, you would use the WarpX Embedded Boundary functionality.
• As a medium with finite conductivity: in that case, you would use the conductivity parameter of the macroscopic medium: macroscopic.sigma_function(x,y,z). Note that this conductivity would be frequency-independent.