I am trying to define a chiral material with the following constitutive relations: D =ϵE +iξB ,H =μ^(−1)B+iξE to generate OAM, However, I don't know how this material can be defined in COMSOL. While COMSOL allows the definition of a an anistropic material, I don't know how I can define bianisotropic materials. similary how can i simulate OAM beams using COMSOL, please help me. Thank you
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