tidy3d.IndexPerturbation

class IndexPerturbation

Bases: Tidy3dBaseModel

A general medium perturbation model which is defined through perturbation to refractive index, n and k.

Parameters:

• delta_n (Optional[ParameterPerturbation] = None) – Perturbation of the real part of refractive index.

• delta_k (Optional[ParameterPerturbation] = None) – Perturbation of the imaginary part of refractive index.

• freq (NonNegativeFloat) – [units = Hz]. Frequency to evaluate permittivity at (Hz).

Example

>>> from tidy3d import LinearChargePerturbation, LinearHeatPerturbation, IndexPerturbation, C_0
>>>
>>> heat_perturb = LinearHeatPerturbation(
...     temperature_ref=300,
...     coeff=0.001,
... )
>>> charge_perturb = LinearChargePerturbation(
...     electron_ref=0,
...     electron_coeff=0.0001,
...     hole_ref=0,
...     hole_coeff=0.0002,
... )
>>> dn_pb = ParameterPerturbation(heat=heat_perturb)
>>> dk_pb = ParameterPerturbation(charge=charge_perturb)
>>> index_pb = IndexPerturbation(delta_n=dn_pb, delta_k=dk_pb, freq=C_0)

Attributes

delta_n
delta_k
freq

Methods

from_perturbation_delta_model(deltas_model)

Create an IndexPerturbation from a DeltaPerturbationModel.

delta_n

delta_k

freq

from_perturbation_delta_model(deltas_model)

Create an IndexPerturbation from a DeltaPerturbationModel.