Detector coupling

Add a detector to a PyMieSim.Simulation when the quantity of interest is collected or coupled power rather than only a scatterer property.

from PyMieSim import (
    Measure,
    Gaussian,
    Photodiode,
    PolarizationState,
    Simulation,
    Sphere,
    ureg,
)

source = Gaussian(
    wavelength=1000 * ureg.nanometer,
    polarization=PolarizationState(angle=30 * ureg.degree),
    optical_power=1 * ureg.watt,
    numerical_aperture=0.3,
)

detector = Photodiode(
    sampling=500,
    numerical_aperture=0.2,
    phi_offset=0 * ureg.degree,
    gamma_offset=0 * ureg.degree,
    medium=1.0,
)

simulation = Simulation(
    scatterer=Sphere(
        diameter=300 * ureg.nanometer,
        material=1.5,
        medium=1.0,
    ),
    source=source,
    detector=detector,
)

coupling = simulation.run(Measure.COUPLING)
print(coupling)

The output is a scalar quantity in watts. It is power collected within the detector cone for the specified source power. Repeat with larger sampling to check angular integration convergence before comparing small differences.

For angularly varying detector parameters, use PhotodiodeSet and Experiment. See the coupling examples and experiment gallery.