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. 2015 Mar 23;5:9366. doi: 10.1038/srep09366

Figure 8. Numerical modelling results for the linear to circular polarization converting bigrating structure.

Figure 8

(a) Co-polarized (dashed red line) and cross-polarized (solid yellow line) reflectivity for ϕ = 45°. (b) Relative phase of reflected radiation as a function of frequency, normalized to the phase of reflection from a planar metallic mirror, along the x direction (dot-dash), y direction (dashed) and their difference (dotted). (c) Ellipticity of reflected radiation, where negative and positive values indicate left and right handed respectively.