Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Diverging FDTD for high power in nonlinear GaAs photonic crystal unsolvable › Reply To: Diverging FDTD for high power in nonlinear GaAs photonic crystal unsolvable
November 27, 2023 at 8:41 pm
Amrita Pati
Ansys Employee
Hi Jordi,
I see that you are already using a quite low dt stability factor and the issue is not due to PML. Is this a broadband simulation? Sometimes the fitting of some materials cause the instability. If it is a brodband simulation, can you try doing the simulation just for a single frequecy point and check if you still see the divergence?
Regards,
Amrita