Figure 4

(a,b) Switching phase-pattern images. (c) Expected retardance and semi-difference. (d) Location of the theoretical effective SoP for each j pattern sector where \(j = 1,2,3,4\) on the Poincaré sphere for a linear incident SoP at \(+ \;45^\circ\). The points A-j and B-j indicate the SoP of the individual phase pattern. (e,f) Experimental output effective Stokes parameters \(\langle{\mathbf{S}}_{e}\rangle = \left( {S_{e 0} ,{ }S_{e 1} ,{ }S_{e 2} ,{ }S_{e 3} } \right)\) and their respective effective \({\text{DoP}}_{{{\langle\mathbf{S}}_{e}\rangle }}\) when the incident beam is polarized at \(+ 45^\circ\). (g) Corresponding expected theoretical Stokes parameters and DoP.