Fig. 6

Expected functionality, sample picture, and experimental characterizations of the bi-channel meta-device III. a The proposed meta-device III is expected to covert the incident LCP light to an anomalously focused NF SPP beam and generate a pre-designed FF hologram as the device is shined by an RCP light. b SEM image of the fabricated sample. c The LRM-recorded near-field pattern generated on the metallic surface, representing an anomalously deflected SPP beam which is then focused to a pre-designed focal point, as the meta-device is shined by LCP light at 1064 nm. d The CCD-captured hologram image in the far field as the meta-device is shined by RCP light at 1064 nm