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Ansys Learning Forum › Forums › Discuss Simulation › Materials › Nonlinear optical material design › Reply To: Nonlinear optical material design

May 17, 2024 at 5:42 pm
Guilin Sun
Ansys Employee

Unfortunately right now FDTD cannot simulate non-3*3 diagonal tensor nonlinear material.

for frequency dependent nonlinear material, currently only  two

Chi3 Raman Kerr

Magnetic Electric Lorentz

can be dispersive.

For permittivity, you can simulate full 3*3 tensor with matrix tranformation: Creating anisotropic optical materials in FDTD and MODE

If you want to simulate broadband, you will need to make sure that the unitary matrix does not depend on frequency.

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