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Dynamic modulation of Poincaré beams
Figure 4 Schematic of (a) an experimental setup including (III) the DPMS and (II)[...]
Spatial phase retardation of polarization components.
Figure 1 Polarization structured LG beams.
Spatial modulation of spin and orbital angular momentum.
Holographic modulation of polarization singular structures.
Figure 2 Spatial polarization modulation of a helical LG5,3 beam: (a) Polarization ellipses based on measured Stokes parameters S1,2,3 ∈ [−1, 1] shown in (e–g).
Methods
Dynamic polarization modulation system – DPMS.
Figure 3 Polarization spiral containing various polarization singularities34: The polarization modulation hologram ΔφSLM in (k) results in a polarization field shown in ((a) simulation) and ((j) measurement).
Mathematical description of DPMS by Jones formalism.
Figure 4 Schematic of (a) an experimental setup including (III) the DPMS and (II) a polarization measurement system (b) the orientation angle θ of a wave plate (WP) defined as the inclination of its fast axis to the linear horizontal input polarization, h
Spatial phase retardation of polarization components.
Figure 5 Dynamic polarization modulation: (a) Subspace of a DPMS.
Table 1 Retardation Γ(n) = λ/n and orientation angle θ1,2 parameters of the two wave plates WP1,2 of simulations and experiments shown in Fig.
Setting a spatial amplitude ratio of polarization components.
Figure 6 Spatial amplitude retardation of polarization components: Subspace of DPMS with (a) phase retardation only, and (b) phase retardation and additional influence to the amplitude ratio of polarization components (θ1,2 = −45°).
Spatially resolved Stokes parameter measurements.
Conclusion
Acknowledgements
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Dynamic modulation of Poincaré beams
Entstehung
14.8.2017
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