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Individually tunable array reflector for amplitude and phase modulation
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DOI：10.1364/OE.472671.png)
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摘要
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Based on graphene's phase modulation property and vanadium dioxide's amplitude modulation property, we developed an array reflector for terahertz frequencies that is individually adjustable. Starting with a theoretical analysis, we look into the effects of voltage on the Fermi level of graphene and temperature on the conductivity of vanadium dioxide, analyze the beam focusing characteristics, and finally link the controllable quantities with the reflected beam characteristics to independently regulate each cell in the array. The simulation findings demonstrate that the suggested array structure can precisely manage the focus point's position, intensity, and scattering degree and that, with phase compensation, it can control the wide-angle incident light. The array structure offers a novel concept for adjustable devices and focusing lenses, which has excellent potential for study and application.(c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Keyword:
TERAHERTZ WAVES
GRAPHENE
ABSORPTION
期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
机构
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