Mediums#

Non-Dispersive Medium#

Spatially uniform#

tidy3d.Medium

Dispersionless medium.

tidy3d.PECMedium

Perfect electrical conductor class.

tidy3d.FullyAnisotropicMedium

Fully anisotropic medium including all 9 components of the permittivity and conductivity tensors.

Spatially varying#

tidy3d.CustomMedium

Medium with user-supplied permittivity distribution.

Dispersive Mediums#

Spatially uniform#

tidy3d.PoleResidue

A dispersive medium described by the pole-residue pair model.

tidy3d.Lorentz

A dispersive medium described by the Lorentz model.

tidy3d.Sellmeier

A dispersive medium described by the Sellmeier model.

tidy3d.Drude

A dispersive medium described by the Drude model.

tidy3d.Debye

A dispersive medium described by the Debye model.

Spatially varying#

tidy3d.CustomPoleResidue

A spatially varying dispersive medium described by the pole-residue pair model.

tidy3d.CustomLorentz

A spatially varying dispersive medium described by the Lorentz model.

tidy3d.CustomSellmeier

A spatially varying dispersive medium described by the Sellmeier model.

tidy3d.CustomDrude

A spatially varying dispersive medium described by the Drude model.

tidy3d.CustomDebye

A spatially varying dispersive medium described by the Debye model.

General Mediums (can be both dispersive and non-dispersive)#

Spatially uniform#

tidy3d.AnisotropicMedium

Diagonally anisotropic medium.

tidy3d.Medium2D

2D diagonally anisotropic medium.

Spatially varying#

tidy3d.CustomAnisotropicMedium

Diagonally anisotropic medium with spatially varying permittivity in each component.

Medium Specifications (add properties to existing Medium)#

Nonlinear#

tidy3d.NonlinearSpec

Abstract specification for adding nonlinearities to a medium.

tidy3d.NonlinearSusceptibility

Model for an instantaneous nonlinear chi3 susceptibility.

tidy3d.KerrNonlinearity

Model for Kerr nonlinearity which gives an intensity-dependent refractive index of the form \(n = n_0 + n_2 I\).

tidy3d.TwoPhotonAbsorption

Model for two-photon absorption (TPA) nonlinearity which gives an intensity-dependent absorption of the form \(\alpha = \alpha_0 + \beta I\).

Time Modulation#

tidy3d.ModulationSpec

Specification adding space-time modulation to the non-dispersive part of medium including relative permittivity at infinite frequency and electric conductivity.

tidy3d.SpaceTimeModulation

Space-time modulation applied to a medium, adding on top of the time-independent part.

tidy3d.ContinuousWaveTimeModulation

Class describing modulation with a harmonic time dependence.

tidy3d.SpaceModulation

The modulation profile with a user-supplied spatial distribution of amplitude and phase.

Material Library#