Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces

Andrei Komar; Ramón Paniagua-Domínguez; Andrey Miroshnichenko; Ye Feng Yu; Yuri S. Kivshar; Arseniy I. Kuznetsov; Dragomir Neshev

doi:10.1021/acsphotonics.7b01343

Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces

Andrei Komar^*
, Ramón Paniagua-Domínguez
, Andrey Miroshnichenko
, Ye Feng Yu
, Yuri S. Kivshar
, Arseniy I. Kuznetsov
, Dragomir Neshev

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

366 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1742-1748
Number of pages	7
Journal	ACS Photonics
Volume	5
Issue number	5
DOIs	https://doi.org/10.1021/acsphotonics.7b01343
Publication status	Published - 16 May 2018

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title = "Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces",

abstract = "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.",

keywords = "beam steering, dielectric resonators, liquid crystals, optical metasurface, tunable metasurface",

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doi = "10.1021/acsphotonics.7b01343",

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T1 - Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces

AU - Komar, Andrei

AU - Paniagua-Domínguez, Ramón

AU - Miroshnichenko, Andrey

AU - Yu, Ye Feng

AU - Kivshar, Yuri S.

AU - Kuznetsov, Arseniy I.

AU - Neshev, Dragomir

PY - 2018/5/16

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N2 - 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.

AB - 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.

KW - beam steering

KW - dielectric resonators

KW - liquid crystals

KW - optical metasurface

KW - tunable metasurface

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Dynamic Beam Switching by Liquid Crystal Tunable Dielectric Metasurfaces

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