Sellmeier2¶

class dnois.mt.Sellmeier2(name: str, a: float, b1: float, b2: float, wl1: float, wl2: float, min_wl: float = None, max_wl: float = None, default_unit: str = 'um')¶

Materials described by Sellmeier2 formula:

\[n^2-1=A+\frac{B_1\lambda^2}{\lambda^2-\lambda_1^2}+\frac{B_2}{\lambda^2-\lambda_2^2}\]

Parameters:

a (float) – \(A\) in Sellmeier2 formula.
b1 (float) – \(B_1\) in Sellmeier2 formula.
b2 (float) – \(B_2\) in Sellmeier2 formula.
wl1 (float) – \(\lambda_1\) in Sellmeier2 formula.
wl2 (float) – \(\lambda_2\) in Sellmeier2 formula.

See Material for descriptions for other parameters.

classmethod from_dict(d: dict) → Self¶

Constructs an instance of cls from a dict.

Parameters:: d (dict) – A dict typically returned by to_dict().
Returns:: An instance of cls.

classmethod load_json(file, **kwargs) → Self¶

Constructs an instance of cls through loading JSON from a file, converting it to a dict and then calling from_dict().

Parameters:

file (str or pathlib.Path or file-like object) – The JSON file to load. Either its path (str or pathlib.Path) or a file-like object.
kwargs – Keyword arguments passed to json.load().

Returns:

An instance of cls.

n(wl: Real | Tensor) → Real | Tensor¶

Computes refractive index.

Parameters:: wavelength – Value of wavelength.
Type:: float or Tensor
Returns:: Refractive index.
Return type:: float or Tensor

save_json(file, **kwargs)¶

Save self into a JSON file file.

Parameters:

file – The JSON file to save. Either its path (str or pathlib.Path) or a file-like object.
kwargs – Keyword arguments passed to json.dump().

to_dict(keep_tensor: bool = True) → dict[str, Any]¶

Converts self into a dict which recursively contains only primitive Python objects.

Return type:: dict

to_json(**kwargs) → str¶

Converts self into a JSON string.

Parameters:: kwargs – Keyword arguments passed to json.dumps().
Return type:: str

a_pp¶: \(A+1\) in Sellmeier2 formula.

b1¶: \(B_1\) in Sellmeier2 formula.

b2¶: \(B_2\) in Sellmeier2 formula.

default_unit¶: Default unit.

max_wl¶: Maximum wavelength valid for the material.

min_wl¶: Minimum wavelength valid for the material.

name¶: Name of the material.

swl1¶: \(\lambda_1^2\) in Sellmeier2 formula.

swl2¶: \(\lambda_2^2\) in Sellmeier2 formula.