tidy3d.DefaultStablePMLParameters#

tidy3d.DefaultStablePMLParameters = PMLParams(sigma_order=3, sigma_min=0.0, sigma_max=1.0, type='PMLParams', kappa_order=3, kappa_min=1.0, kappa_max=5.0, alpha_order=1, alpha_min=0.0, alpha_max=0.9)#

Specifies full set of parameters needed for complex, frequency-shifted PML.

Parameters

  • sigma_order (NonNegativeInt = 3) – Order of the polynomial describing the absorber profile (~dist^sigma_order).

  • sigma_min (NonNegativeFloat = 0.0) – [units = 2*EPSILON_0/dt]. Minimum value of the absorber conductivity.

  • sigma_max (NonNegativeFloat = 1.5) – [units = 2*EPSILON_0/dt]. Maximum value of the absorber conductivity.

  • kappa_order (NonNegativeInt = 3) – Order of the polynomial describing the PML kappa profile (kappa~dist^kappa_order).

  • kappa_min (NonNegativeFloat = 0.0) –

  • kappa_max (NonNegativeFloat = 1.5) –

  • alpha_order (NonNegativeInt = 3) – Order of the polynomial describing the PML alpha profile (alpha~dist^alpha_order).

  • alpha_min (NonNegativeFloat = 0.0) – [units = 2*EPSILON_0/dt]. Minimum value of the PML alpha.

  • alpha_max (NonNegativeFloat = 1.5) – [units = 2*EPSILON_0/dt]. Maximum value of the PML alpha.

Example

>>> params = PMLParams(sigma_order=3, sigma_min=0.0, sigma_max=1.5, kappa_min=0.0)