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Montage (Supplementary information) of SHG from a single ZnSe nanowire generated by the two perpendicularly polarized multiplexed beams during the GA-assisted beam overlapping procedure. Green: image from the stationary reference beam; red: image from the beam subjected to the GA. The weighting factor w was increased to 0.5 at the 9th generation. The overlapping process converged after 81 generations, which took approximately 5.5 min.
