Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces

By A. Komar, R. Paniagua‐Domínguez, Andrey Miroshnichenko, Y. Yu, Yuri Kivshar, Arseniy I. Kuznetsov, Dragomir N. Neshev. 2018

327 citations recorded by the source corpus.

Dynamic steering of laser beams by ultrathin optical metasurfaces is a significant research advance for possible applications in remote ranging and sensing. A unique platform for such important functionalities is offered by dielectric metasurfaces that have the highest transmission efficiency. However, the realization of dynamically tunable metasurfaces still remains a challenge. Here we experimentally demonstrate the dynamic switching of beam deflection by a silicon-nanodisk dielectric metasurface infiltrated with liquid crystals. In particular, we show the switching of a laser beam from 0° to a 12° angle with an efficiency of 50% by heating the metasurface to modify the liquid crystal state from nematic to isotropic. Our results open important opportunities for tunable ultrathin beam steering metadevices.

Subfields: Aerospace Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/9a34ea7682541a2310bd543f96296af6144e4395

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In Aerospace Engineering

In Atomic and Molecular Physics, and Optics

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Spatiotemporal light control with active metasurfaces (2019, background): “Liquid crystals have also openedways to thermally control metasurfaces (77) and facilitate active redirection of laser beams (74).”