Abstract
The absolute values of the three degrees of mutual coherence between the analytic signals representing the components of the electric field of a given three-dimensional (3D) polarization state are relative quantities that depend on the laboratory reference frame considered. The extremal values for the said absolute values are determined and analyzed. The reduction to the well-known conventional 2D case is retrieved in a natural way.
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Acknowledgement
The author thanks Dr Alfredo Luis for insightful discussions on this subject. This work was supported by Ministerio de Economía y Competitividad and European Union, grants FIS2011-22496 and FIS2014-58303-P.
Disclosure statement
No potential conflict of interest was reported by the author.