Written by Admin | Aug 30, 2021 4:00:00 AM
Question
I am doing a polarization calculation where I an sending either linear or elliptically polarized light into my system. I seem to be getting incorrect answers for some orientations of the polarization axis of the input beam. Is there a known problem related to this?
Synopsis
Known problem with angular dependence of polarization calculation
Symptoms
An error has been found in OSLO 6.2.2a that has apparently existed in the polarization calculation of OSLO since before the 5.4 release of OSLO. Since only the polarization calculation is affected, this only relates to the Premium edition of OSLO. The error exists when the user defines different values of PZEA: the parameter that sets the angle between the y-axis and the major axis of the polarization ellipse for the object beam. The calculation of phase is inverted (incorrect) when the PZEA angle is defined as being between the 90 degrees range of +135 to +225 degrees. The erroneous range repeats every 90 degrees after that (i.e. +315 to +405 degrees, ...etc.). Note that the error does not extend to values of PZEA less than +135 degrees (all negative values of PZEA are calculated correctly). of
Workaround
When setting the PZEA angle in polarization calculations, it is recommended that all angles be transformed to angles less than +135 degrees.
Solution
See "
Workaround:" section above. The next release of OSLO (the current release is 6.2.2a) will contain a proper correction to this situation.