Sphere: coherent coupling vs sampling

+-----------------------+-----------------------+
| Sellmeier Materials   | Tabulated Materials   |
+=======================+=======================+
| fused_silica          | calcium               |
+-----------------------+-----------------------+
| water                 | gold                  |
+-----------------------+-----------------------+
| BAK1                  | copper                |
+-----------------------+-----------------------+
| soda_lime_glass       | silicon               |
+-----------------------+-----------------------+
| lithium_niobate       | aluminium             |
+-----------------------+-----------------------+
| argon                 | iron                  |
+-----------------------+-----------------------+
| flint                 | polyetylene           |
+-----------------------+-----------------------+
| BAF10                 | sodium                |
+-----------------------+-----------------------+
| germanium             | silver                |
+-----------------------+-----------------------+
| air                   | nickel                |
+-----------------------+-----------------------+
| crown                 | zinc                  |
+-----------------------+-----------------------+
| SF5                   |                       |
+-----------------------+-----------------------+
| polystyren            |                       |
+-----------------------+-----------------------+
| BK7                   |                       |
+-----------------------+-----------------------+
| acetone               |                       |
+-----------------------+-----------------------+
| ZBLAN                 |                       |
+-----------------------+-----------------------+

[<matplotlib.lines.Line2D object at 0x7fd4f529a990>, <matplotlib.lines.Line2D object at 0x7fd4f5299e50>, <matplotlib.lines.Line2D object at 0x7fd4f5298950>, <matplotlib.lines.Line2D object at 0x7fd4f5298e10>, <matplotlib.lines.Line2D object at 0x7fd4f5298910>]

import numpy
from PyMieSim import (
    ureg,
    CoherentModeSet,
    SphereSet,
    GaussianSet,
    PolarizationSet,
    Experiment,
    print_available,
    SellmeierMaterial,
)

print_available()

polarization_set = PolarizationSet(
    angles=[90.0] * ureg.degree,
)

source = GaussianSet(
    wavelength=[400] * ureg.nanometer,
    polarization=polarization_set,
    optical_power=[1e-3] * ureg.watt,
    numerical_aperture=[0.2],
)
scatterer = SphereSet(
    diameter=[1000] * ureg.nanometer,
    material=[SellmeierMaterial("BK7")],
    medium=[1],
)

detector = CoherentModeSet(
    mode_number=["LP01"],
    rotation=[0] * ureg.degree,
    numerical_aperture=[0.1],
    phi_offset=numpy.linspace(-80, 80, 200) * ureg.degree,
    gamma_offset=[0] * ureg.degree,
    sampling=[10, 20, 40, 80, 160],
    polarization_filter=[0] * ureg.degree,
)

experiment = Experiment(scatterer_set=scatterer, source_set=source, detector_set=detector)

result = experiment.get("coupling")

result.plot(x="detector:phi_offset")