Fig. 3: Simultaneous manipulation of different plasmonic foci.
From: Dynamic control and manipulation of near-fields using direct feedback
a A pair of plasmonic foci can be achieved via splitting a plasmonic focal spot by adding together two shifted radial phases on the SLM, each corresponding to a shifted plasmonic focus. b-c the two emerging plasmonic foci can be manipulated and rotated simultaneously by varying the locations and relative phases of the shifted radial patterns. d–f The SLM phase masks desired for the measurements (a–c) respectively
