Demonstration of the dynamic beam-steering metadevice (IMAGE)

SPIE--International Society for Optics and Photonics

Demonstration of the dynamic beam-steering metadevice

Caption

Demonstration of the dynamic beam-steering metadevice: (a) Schematics of the metadevice, which consists of two layers of transmissive metasurfaces aligned by a motorized rotation stage. (b) Top view (left) and (c) bottom view (right) SEM pictures of the fabricated metadevice. (d) Schematics of the experimental setup shown to characterize the meta-device. (e) Experimental and (f) simulated far-field scattering power distributions with the metadevice illuminated by an LCP light at 0.7 THz, and evolving along Path I at different time instants. (g) Evolution of transmitted wave directions on the sphere of k direction as the metadevice moves along Path I and Path II, with solid line (star-symbols) denoting the simulated (experimental) results. Here, the blue region denotes the solid angle for beam-steering coverage.

Credit

X. Cai et al., doi 10.1117/1.AP.3.3.036003.

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