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Figure 2
(a) Graphic of the Poincaré sphere on which the Stokes vector points are shown. Each point on the Poincaré sphere represents a polarization state with specific orientation, ellipticity and helicity. (b) A visualization of the polarization state corresponding to a set of Stokes vectors achievable by translating the Apple X (undulator phase ϕ) in anti-parallel (column 1) and parallel mode (column 2). |