tidy3d.Absorber

class tidy3d.Absorber

Specifies an adiabatic absorber along a single dimension. This absorber is well-suited for dispersive materials intersecting with absorbing edges of the simulation at the expense of more layers.

Parameters

• name (Optional[str] = None) – Optional unique name for boundary.

• num_layers (NonNegativeInt = 40) – Number of layers of absorber to add to + and - boundaries.

• parameters (AbsorberParams = AbsorberParams(sigma_order=3, sigma_min=0.0, sigma_max=6.4, type='AbsorberParams')) – Adiabatic absorber parameters.

Example

>>> pml = Absorber(num_layers=40)

Show JSON schema

{
   "title": "Absorber",
   "description": "Specifies an adiabatic absorber along a single dimension.\nThis absorber is well-suited for dispersive materials\nintersecting with absorbing edges of the simulation at the expense of more layers.\n\nParameters\n----------\nname : Optional[str] = None\n    Optional unique name for boundary.\nnum_layers : NonNegativeInt = 40\n    Number of layers of absorber to add to + and - boundaries.\nparameters : AbsorberParams = AbsorberParams(sigma_order=3, sigma_min=0.0, sigma_max=6.4, type='AbsorberParams')\n    Adiabatic absorber parameters.\n\nExample\n-------\n>>> pml = Absorber(num_layers=40)",
   "type": "object",
   "properties": {
      "name": {
         "title": "Name",
         "description": "Optional unique name for boundary.",
         "type": "string"
      },
      "type": {
         "title": "Type",
         "default": "Absorber",
         "enum": [
            "Absorber"
         ],
         "type": "string"
      },
      "num_layers": {
         "title": "Number of Layers",
         "description": "Number of layers of absorber to add to + and - boundaries.",
         "default": 40,
         "minimum": 0,
         "type": "integer"
      },
      "parameters": {
         "title": "Absorber Parameters",
         "description": "Adiabatic absorber parameters.",
         "default": {
            "sigma_order": 3,
            "sigma_min": 0.0,
            "sigma_max": 6.4,
            "type": "AbsorberParams"
         },
         "allOf": [
            {
               "$ref": "#/definitions/AbsorberParams"
            }
         ]
      }
   },
   "additionalProperties": false,
   "definitions": {
      "AbsorberParams": {
         "title": "AbsorberParams",
         "description": "Specifies parameters common to Absorbers and PMLs.\n\nParameters\n----------\nsigma_order : NonNegativeInt = 3\n    Order of the polynomial describing the absorber profile (~dist^sigma_order).\nsigma_min : NonNegativeFloat = 0.0\n    [units = 2*EPSILON_0/dt].  Minimum value of the absorber conductivity.\nsigma_max : NonNegativeFloat = 1.5\n    [units = 2*EPSILON_0/dt].  Maximum value of the absorber conductivity.\n\nExample\n-------\n>>> params = AbsorberParams(sigma_order=3, sigma_min=0.0, sigma_max=1.5)",
         "type": "object",
         "properties": {
            "sigma_order": {
               "title": "Sigma Order",
               "description": "Order of the polynomial describing the absorber profile (~dist^sigma_order).",
               "default": 3,
               "minimum": 0,
               "type": "integer"
            },
            "sigma_min": {
               "title": "Sigma Minimum",
               "description": "Minimum value of the absorber conductivity.",
               "default": 0.0,
               "units": "2*EPSILON_0/dt",
               "minimum": 0,
               "type": "number"
            },
            "sigma_max": {
               "title": "Sigma Maximum",
               "description": "Maximum value of the absorber conductivity.",
               "default": 1.5,
               "units": "2*EPSILON_0/dt",
               "minimum": 0,
               "type": "number"
            },
            "type": {
               "title": "Type",
               "default": "AbsorberParams",
               "enum": [
                  "AbsorberParams"
               ],
               "type": "string"
            }
         },
         "additionalProperties": false
      }
   }
}

attribute num_layers: pydantic.types.NonNegativeInt = 40

Number of layers of absorber to add to + and - boundaries.

Constraints

• minimum = 0

attribute parameters: tidy3d.components.boundary.AbsorberParams = AbsorberParams(sigma_order=3, sigma_min=0.0, sigma_max=6.4, type='AbsorberParams')

Adiabatic absorber parameters.