How to define a complex value of chi3 in nonlinear simulaiton

Hello,

I work with nonlinear optics, and trying to use FDTD solutions to simulate a nonlinear problem. But the nonlinear material that I am working with has a complex chi3 coefficient. The software seems only allow real value of chi3 to input.

Could you give me some advice how to add the complex value of chi3 to my material?

Thanks!
-Yuzhe

Hi, @xiao5 !

With this question, I would direct you to the post about complex-values chi3: Nonlinear susceptibility with loss

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