Sphere: Coherent Goniometer

Importing the package dependencies: numpy, PyMieSim

import numpy
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 UsualMaterial
from PyMieSim import measure

Defining the source to be employed.

source = Gaussian(
    wavelength=1200e-9,
    polarization_value=90,
    polarization_type='linear',
    optical_power=1e-3,
    NA=0.2
)

Defining the ranging parameters for the scatterer distribution

scatterer = Sphere(
    diameter=2000e-9,
    material=UsualMaterial.BK7,
    medium_index=1,
    source=source
)

Defining the detector to be employed.

detector = CoherentMode(
    mode_number='LP11',
    NA=[0.5, 0.3, 0.1, 0.05],
    phi_offset=numpy.linspace(-180, 180, 400),
    gamma_offset=0,
    sampling=400,
    polarization_filter=None,
    rotation=0,  # Rotation of the mode field
)

Defining the experiment setup

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

Measuring the properties

data = experiment.get(measure.coupling)

Plotting the results

figure = data.plot(
    x=experiment.phi_offset,
    y_scale='log',
    normalize=True
)

_ = figure.show()