SourceSampling¶
Type: | Matrix<float>, or section |
---|---|
Range: | [v_11, …, v_1j; …; v_i1, …; v_ij], j<=6 |
Default: | -/- |
Appearance: | simple |
Defines the source sampling of the illumination pupil in normalized coordinates. For the notation see the parent section Illumination.
Each row in the matrix corresponds to a source point. The columns of the table must contain the following quantities: , , , , , and . The quantities , and were introduced in the parent section Illumination. Instead of the intensity as introduced in the parent section Illumination a scaled intensity is passed. Details are given below.
Together with the total intensity , the additional parameters and are used to fix the Jones vector components and of the completely polarized state :
In general the completely polarized state exhibit a elliptical polarization with ellipticity given by and orientation , so that
where is the intensity of the completely polarized state.
The completely unpolarized component
is determined from
Warning
The given data, , etc, refer to the effective light source in the pupil plane.
Intensity scaling
It remains to fix the input quantity for a given source point . In the parent section the total intensity referred to the squared magnitude of the electric field vector of a plane wave. However, in many textbooks the intensity of a plane wave is defined as the magnitude of the Poynting vector, that is, as the energy flux through a unit surface perpendicular to the propagation direction. JCMsuite
uses the following convention:
The sum over all given scaled intensities gives the total energy flux through the pupil plane:
Hence, the scaled intensities already accounts for the integration of the extended illumination over the source points .