Polarization

One or more of these are added under the Simulation object as required, and describe the relative orientation of any static fields with respect to the absorbed or emitted radiation. If none are present random polarization is assumed

Settings

Direction

Select the polarization of the light, and thus the M selection rules. Possible values are:

Random - |ΔM | ≤ rank
Parallel - ΔM = 0
Perpendicular - ΔM = ±rank
Circular - ΔM = +rank

(Rank = 1 for a normal single photon transition)

Note that PGOPHER versions before 8.0.186 also had a rank setting, and also relative intensities for random polarisation or rank ≠ 1 were not calculated correctly.

Parameters

Strength

Relative strength of this component of the field - note that the relative intensity is proportional to the square of this value.