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.

Medium Perturbations

tidy3d.PerturbationMedium	Dispersionless medium with perturbations.
tidy3d.PerturbationPoleResidue	A dispersive medium described by the pole-residue pair model with perturbations.

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

• Material Library
  • Silver (“Ag”)
  • Aluminum (“Al”)
  • Alumina (“Al2O3”)
  • Aluminum Arsenide (“AlAs”)
  • Aluminum Gallium Nitride (“AlGaN”)
  • Aluminum Nitride (“AlN”)
  • Aluminum Oxide (“AlxOy”)
  • Amino Acid (“Aminoacid”)
  • Silicon (Amorphous) (“aSi”)
  • Gold (“Au”)
  • Beryllium (“Be”)
  • N-BK7 Borosilicate Glass (“BK7”)
  • Calcium Fluoride (“CaF2”)
  • Cellulose (“Cellulose”)
  • Chromium (“Cr”)
  • Silicon (Crystalline) (“cSi”)
  • Copper (“Cu”)
  • Fused Silica (“FusedSilica”)
  • Gallium Arsenide (“GaAs”)
  • Germanium (“Ge”)
  • Germanium Oxide (“GeOx”)
  • Graphene (“graphene”)
    • tidy3d.Graphene
      • Graphene
        • Graphene.__init__()
        • Graphene.mu_c
        • Graphene.temp
        • Graphene.gamma
        • Graphene.scaling
        • Graphene.include_interband
        • Graphene.interband_fit_freq_nodes
        • Graphene.interband_fit_num_iters
        • Graphene.medium
        • Graphene.intraband_drude
        • Graphene.interband_pole_residue
        • Graphene.numerical_conductivity()
        • Graphene.interband_conductivity()
        • Graphene.__hash__()
  • Water (“H2O”)
  • Hafnium Oxide (“HfO2”)
  • Hexamethyldisilazane, or Bis(trimethylsilyl)amine (“HMDS”)
  • Indium Arsenide (“InAs”)
  • Indium Phosphide (“InP”)
  • Indium Tin Oxide (“ITO”)
  • Lithium niobate (“LiNbO3”)
  • Magnesium Fluoride (“MgF2”)
  • Magnesium Oxide (“MgO”)
  • Molybdenum Disulfide (“MoS2”)
  • Molybdenum Diselenide (“MoSe2”)
  • Nickel (“Ni”)
  • Palladium (“Pd”)
  • Polyetherimide (“PEI”)
  • Polyethylene Naphthalate (“PEN”)
  • Polyethylene Terephthalate (“PET”)
  • Poly(methyl Methacrylate) (“PMMA”)
  • Polycarbonate (“Polycarbonate”)
  • Polystyrene (“Polystyrene”)
  • Platinum (“Pt”)
  • Polytetrafluoroethylene, or Teflon (“PTFE”)
  • Polyvinyl Chloride (“PVC”)
  • Sapphire (“Sapphire”)
  • Silicon Nitride (“Si3N4”)
  • Silicon Carbide (“SiC”)
  • Silicon Mononitride (“SiN”)
  • Silicon Dioxide (“SiO2”)
  • Silicon Oxynitride (“SiON”)
  • Tantalum Pentoxide (“Ta2O5”)
  • Titanium (“Ti”)
  • Titanium Oxide (“TiOx”)
  • Tungsten (“W”)
  • Tungsten Disulfide (“WS2”)
  • Tungsten Diselenide (“WSe2”)
  • Yttrium Oxide (“Y2O3”)
  • Yttrium Aluminium Garnet (“YAG”)
  • Zirconium Oxide (“ZrO2”)

Abstract Classes

tidy3d.components.medium.AbstractPerturbationMedium	Abstract class for medium perturbation.
tidy3d.components.medium.NonlinearModel	Abstract model for a nonlinear material response.