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22 August 2020 Electrically tunable metasurface for lidar
Junghyun Park, Byung Gil Jeong, Sun Il Kim, Duhyun Lee, Jisan Lee, Inoh Hwang, Hyuck Choo, Kyoungho Ha
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Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114620R (2020) https://doi.org/10.1117/12.2567084
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
We present an electrically tunable metasurface and demonstrate an ultrafast beam steering and distance-ranging. A unit cell of the proposed device consists of plasmonic antennas and an ITO film as an active, tunable layer. By individually applying electrical biases to the top and bottom of the unit cell, we achieve in the near-infrared range a phase change up to 360 degrees while keeping the amplitude constant. An adjustable gradient phase profile allows for all solid-state-electronic beam steering. Using the Time-of-Flight principle, we demonstrate for the first time metaphotonic-light detection and ranging (Meta-LiDAR).
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Junghyun Park, Byung Gil Jeong, Sun Il Kim, Duhyun Lee, Jisan Lee, Inoh Hwang, Hyuck Choo, and Kyoungho Ha "Electrically tunable metasurface for lidar", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114620R (22 August 2020); https://doi.org/10.1117/12.2567084
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KEYWORDS
LIDAR
Antennas
Control systems
Dielectric polarization
Modulation
Cameras
Dielectrics
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