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. 2022 Oct 17;11:302. doi: 10.1038/s41377-022-00961-y

Fig. 6. Simulation and experimental results of the selected 3D polarization knots at λ = 500 nm.

Fig. 6

a The intensity distribution at different observation planes upon the illumination of RCP light. b Polarization structure detection with different combinations of transmission axes of the first polarizer and the second polarizer