Sphere: Coherent Goniometer

Importing the package dependencies: numpy, PyMieSim

import numpy
from PyMieSim.units import ureg

from PyMieSim.experiment.detector import CoherentMode
from PyMieSim.experiment.scatterer import Sphere
from PyMieSim.experiment.source import Gaussian
from PyMieSim.experiment import Setup
from PyOptik import Material

source = Gaussian(
    wavelength=1200 * ureg.nanometer,
    polarization=90 * ureg.degree,
    optical_power=1e-3 * ureg.watt,
    NA=0.2 * ureg.AU,
)
scatterer = Sphere(
    diameter=2000 * ureg.nanometer,
    refractive_index=Material.BK7,
    medium_refractive_index=1 * ureg.RIU,
    source=source,
)

detector = CoherentMode(
    mode_number="LP11",
    NA=[0.5, 0.3, 0.1, 0.05] * ureg.AU,
    phi_offset=numpy.linspace(-180, 180, 300) * ureg.degree,
    gamma_offset=0 * ureg.degree,
    sampling=400 * ureg.AU,
    polarization_filter=10 * ureg.degree,
    rotation=0 * ureg.degree,  # Rotation of the mode field
)

experiment = Setup(scatterer=scatterer, source=source, detector=detector)

dataframe = experiment.get("coupling")

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

<Figure size 800x500 with 1 Axes>