Buchnev, Oleksandr, Podoliak, Nina, Kaltenecker, Korbian, Walther, Markus, Kaczmarek, Malgosia and Fedotov, Vassili (2019) Ultra-thin metamaterial-enhanced liquid-crystal terahertz spatial phase modulator. SPIE Optics and Photonics 2019, United States, United States. 11 - 15 Aug 2019.
Abstract
We demonstrate experimentally a very thin THz spatial phase modulator based on planar metamaterials hybridysed with a liquid-crystal (LC) cell. It consists of two layers of THz planar metamaterials separated by a 12 µm thick LC layer. Besides enhancing optical anisotropy of the LC layer, the metamaterials also act as spatially addressable electrodes, which transform the resulting structure into an array of sub-wavelength pixels with independently controlled electromagnetic phase. Our approach brings about a new family of LC-enabled but optically thin THz devices for efficient control and manipulation of THz wavefronts
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- Current Faculties > Faculty of Engineering and Physical Sciences > School of Physics and Astronomy > Quantum, Light and Matter Group
School of Physics and Astronomy > Quantum, Light and Matter Group - Current Faculties > Faculty of Engineering and Physical Sciences > Zepler Institute for Photonics and Nanoelectronics > Nanophotonics Group
Zepler Institute for Photonics and Nanoelectronics > Nanophotonics Group - Current Faculties > Faculty of Social Sciences > School of Mathematical Sciences > Applied Mathematics and Theoretical Physics
School of Mathematical Sciences > Applied Mathematics and Theoretical Physics
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